Live Incident

The Static on Channel 21: A Midnight Broadcast Incident, Signal Hijacking, Masked Figures, and Psychological Terror

August 6, 202636 min readBy Media Paranormal Division
Audio Narrator

Listen to Horror Story Audio

Section 1: The Midnight Signal Hijacking of 1987

On the freezing night of November 22, 1987, television viewers across Indianapolis, Indiana, were watching the late-night news broadcast on Channel 21 when the screen suddenly glitched into violent static (The Static on Channel 21: A Midnight Broadcast Incident). For eleven seconds, the news anchor's voice was replaced by a low, rhythmic buzzing sound. The broadcast signal was forcibly hijacked by an unknown high-power transmitter override. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 2: The Masked Figure in the Basement

The video signal cut to a dimly lit concrete basement room with damp brick walls. Standing in the center of the frame was a tall figure wearing a stained trench coat and a disfigured, rubbery plastic mask featuring distorted human facial features with hollow eye holes and no mouth opening. The figure did not speak; instead, it swayed unnaturally back and forth while holding a dead metal television antenna, occasionally leaning into the camera lens with violent, jerky movements. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 3: Mass Panic and Infrasound Frequency Effects

Station engineers managed to override the signal after twenty-five seconds, but the damage was done. Hundreds of terrified viewers flooded the station switchboard with frantic phone calls reporting sudden nausea, blinding headaches, and severe panic attacks. Audio spectrum analysis later revealed that the broadcast included sub-audible 19 Hz infrasound frequencies—an acoustic wave known to induce visceral dread and hallucinations. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 4: FCC and Federal Police Investigations

The Federal Communications Commission (FCC) and federal law enforcement launched an exhaustive investigation, inspecting signal origin towers, microwave relays, and regional transmitters across Indiana. Despite months of technical audits and rewards offered for information, the identity of the masked figure and the location of the override transmitter were never discovered. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 5: The Max Headroom Signal Intrusion Parallel

The Channel 21 incident occurred on the exact same night as the famous Max Headroom Signal Intrusion in Chicago, Illinois, where WGN-TV and WTTW were hijacked by a figure in a Max Headroom mask. Investigators speculated that a sophisticated underground hacker collective possessed military-grade microwave override equipment. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 6: Secret Government Experiments and MK-Ultra Sub-Projects

Alternative theories put forward by investigative journalists suggest that the broadcast hijacking was part of a secret government subliminal mind-control test (*MK-Ultra* descendant project) testing public psychological responses to televised infrasound stimuli during late-night hours. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 7: Parapsychological Analysis – Electronic Voice Phenomena and TV CRT Cathodes

Parapsychologists note that analog television cathode-ray tubes (CRTs) and electromagnetic broadcast waves serve as potent conductors for non-physical spirit manifestations (Electronic Voice Phenomena / Instrumental Transcommunication). Infrasound waves combined with analog static create energetic gateways that disrupt human neurological fields. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 8: Deathbed Confessions of Former Station Engineers

Decades after the incident, former station engineers privately admitted that master tapes of the Channel 21 hijacking contained unexplainable background audio tracks when played backward: faint, weeping voices whispering localized addresses and warning of upcoming catastrophic events. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 9: Modern Creepypasta Legacy and Digital Transmission Horror

The Channel 21 incident birthed modern digital broadcast horror, inspiring creepypasta tales like *The Ring*, *Suicidemouse.avi*, and analog horror series like *The Mandela Catalogue*. It highlights humanity's visceral fear of technology being hijacked by hostile, unseen forces. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 10: Technical Details of Analog Signal Overrides

In 1987, television stations received network feeds via unencrypted satellite or microwave link towers. A hacker positioned near the receiver dish with a high-power transmitter could overpower the station's frequency with a stronger signal. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 11: The Biological Impact of 19 Hz Infrasound Waves

Biophysics studies confirm that 19 Hz infrasound waves resonate with the human eyeball and inner ear, causing involuntary physiological symptoms: blurred vision, chest pressure, hyperventilation, and feelings of overwhelming spiritual dread. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 12: Viewers' Testimonies from the 1987 Indianapolis Wave

Residents of Indianapolis who witnessed the live Channel 21 hijacking recall an overwhelming feeling of unnatural coldness filling their living rooms, accompanied by severe tinnitus and ringing in their ears during the static broadcast. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 13: The Disfigured Plastic Mask Anomaly

Forensic video analysts examining the 25-second footage noted that the plastic mask worn by the figure featured melted, asymmetrical scars that appeared to shift subtly between frames, suggesting biological movement beneath the rubber surface. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 14: The Dead Antenna as an Occult Receiver

Esoteric researchers point out that the dead metal television antenna held by the masked figure was held at a precise 45-degree angle, resembling ancient occult conductive rods used to direct electromagnetic energy during rituals. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 15: Comparative Matrix Table: Channel 21 Intrusion vs. Global Broadcast Hijacks

To understand the technical and psychological scope of signal intrusions, the following matrix compares Channel 21 with other global broadcast incidents:

| Broadcast Incident | Date & Location | Hijacked Station | Signature Visual / Audio | Culprit / Resolution Status |

| :--- | :--- | :--- | :--- | :--- |

| Channel 21 Hijack | Nov 22, 1987 (Indianapolis) | Channel 21 (WTTV) | Trench coat figure in plastic mask; 19 Hz infrasound | Unidentified / Case Open |

| Max Headroom Hijack | Nov 22, 1987 (Chicago) | WGN-TV & WTTW | Max Headroom mask, flyswatter spanking | Unidentified / Case Open |

| Captain Midnight | Apr 27, 1986 (Florida) | HBO Satellite Feed | Text message protesting dish fees | Identified (John R. MacDougall) |

| Southern Television | Nov 26, 1977 (UK) | Southern ITN News | Vrillon *Ashtar Galactic Command* voice | Unidentified / Radio Prank |

| Wyoming Incident | 2006 (Creepypasta) | Wyoming Local TV | 3D disfigured heads, sub-audible tones | Urban Legend / Digital Art | Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 16: The Role of Analog Static in Parapsychology

Analog white noise (*snow static*) consists of random electromagnetic radiation, including cosmic background radiation. Parapsychologists view white noise as a neutral energetic canvas through which non-physical entities manifest visual and auditory forms. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 17: FCC Regulatory Upgrades Following 1987

Following the twin 1987 signal hijackings in Indiana and Illinois, the FCC mandated high-level encryption protocols and automated signal monitoring systems across all commercial television stations in the United States. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 18: The Mystery of the Unfound Transmitter

"The boundary between what is real and what is myth begins to blur when the lights fade. Some things are better left undisturbed."

FCC engineers calculated that overriding Channel 21 required a transmitter generating at least 10,000 watts of power—equipment so large it required a truck or dedicated industrial facility, making its complete disappearance baffling. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 19: Psychological Effects on Children and Late-Night Viewers

Child psychologists in Indianapolis treated dozens of young viewers for acute night terrors and insomnia following the broadcast, as children feared the masked figure would step out of their television screens. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 20: Subliminal Audio Analysis of the Master Tapes

Audio engineers using digital spectrum analyzers discovered hidden sub-audible vocal layers beneath the 19 Hz buzzing noise, including backwards phrases reciting archaic Latin exorcism inversions. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 21: The Emergence of Analog Horror as a Genre

The Channel 21 incident laid the groundwork for modern *analog horror* web series (*Local 58*, *Gemini Home Entertainment*), which exploit CRT static, emergency broadcast tones, and distorted faces to evoke nostalgic dread. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 22: The Masked Figure's Violent Jerky Movements

Movement analysis of the figure's swaying motion indicated unnatural joint flexibility, leading some parapsychologists to speculate the figure was not human, but an ectoplasmic entity clothed in physical garments. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 23: The Cold Room Anomaly in the Station Studio

At the moment Channel 21's signal was hijacked, station staff inside the main control room experienced an abrupt 20-degree drop in room temperature, accompanied by static sparks jumping from control consoles. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 24: Unsolved Questions After Four Decades

Nearly forty years after that freezing November night, no individual has ever claimed responsibility for the Channel 21 hijack, and no physical equipment associated with the override has ever been recovered. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 25: Safeguards for Modern Digital Broadcasts

Today's digital television broadcasts use digital encryption and fiber-optic landlines, eliminating the risk of analog signal overrides, yet digital streaming platforms face new cyber-paranormal vulnerabilities. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 26: The Psychological Terror of Unexpected Media Intrusion

The horror of signal intrusions lies in the violation of domestic sanctuary: the television screen, a comforting fixture in the home, suddenly becomes a portal for hostile, uninvited forces. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 27: The Legacy of Indiana's Urban Legends

The Channel 21 incident remains one of Indiana's most famous urban legends, discussed in local podcasts, paranormal conventions, and historical retrospectives. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 28: Infrasound as a Paranormal Weapon

Military and parapsychological research confirms that low-frequency sound waves can be weaponized to induce disorientation, fear, and compliance in civilian populations. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 29: The Silent Watchers Behind the Screen

Esoteric scholars warn that electronic media networks create vast energetic webs that sensitive individuals can perceive as living, watchful presences. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 30: Forensic Video Enhancements of the Trench Coat Figure

Modern 4K video enhancements of the 25-second master tape reveal faint, dark eye sockets beneath the rubber mask that appear to track the camera lens with cold, intelligent awareness. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 31: The Unbroken Mystery of November 22, 1987

The coincidence of two major broadcast intrusions occurring on the exact same night in Indiana and Illinois suggests a coordinated, high-level operation that defied law enforcement detection. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 32: Lessons on Technological Dependence and Vulnerability

Channel 21 reminds modern society that our reliance on electronic communication networks leaves us vulnerable to unseen disruptions that shatter our sense of security. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 33: The Future of Media Paranormal Audits

Paranormal researchers continue monitoring broadcast frequencies and digital streams for anomalies, documenting ongoing interactions between technology and spiritual phenomena. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.

Section 34: The Final Warning for Late-Night Viewers

When watching television late at night and the screen suddenly glitches into static—do not stare into the screen, for the eyes behind the glass may be staring back at you. In esoteric studies, modern investigations demonstrate how collective belief, historical tragedy, and residual spiritual tethers alter environmental energy fields. When individuals encounter these energetic anomalies, the non-physical forces frequently manifest through severe physical temperature drops, electronic interference, and terrifying psychological impressions. Consequently, analytical researchers classify these events as genuine localized bio-magnetic interactions between physical matter and non-physical energetic entities.

Section 35: Conclusion – The Lingering Silence of Channel 21

In conclusion, the Channel 21 Midnight Broadcast Incident remains a terrifying reminder of technological vulnerability and psychological terror. As dark television screens flicker into static late at night, viewers are reminded that behind the glowing cathode glass, some signals are broadcasting from the dark. Parapsychological researchers and historical investigators emphasize that physical artifacts, localized atmospheric anomalies, and human emotional tethers interact directly with bio-magnetic fields. When intense human trauma or unhallowed rituals occur, the resulting energetic resonance remains recorded in physical matter, creating localized dimensional distortions that persist across generations. Furthermore, historical documentation from witnesses confirms that spatial anomalies manifest through localized micro-climates, magnetic field disruptions, and profound psychological impressions that alter human perception.