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hallucinations

Featured Neuroscience Psychology Visual Neuroscience

·December 18, 2024·5 min read

Study Ties Visual Errors to Paranoid Beliefs

A new study suggests complex beliefs like paranoia may have roots in visual misperception. Participants prone to paranoia or teleological thinking were more likely to wrongly identify one moving dot as chasing another in a visual task.

Featured Neuroscience Psychology

·November 14, 2024·6 min read

Brain Circuits Behind Psychedelics’ Anti-Anxiety Power Decoded

New research has identified distinct neural circuits for the anti-anxiety and hallucinogenic effects of psychedelics. Using the psychedelic DOI in mice, researchers demonstrated that anxiety reduction persists long after hallucinatory effects subside.

This shows a woman and psychedelic swirls.

Featured Neuroscience Psychology

·October 3, 2024·4 min read

Psychedelics Reduce Anxiety Without Hallucinations

New research has pinpointed the specific brain region and neuron type responsible for reducing anxiety using the psychedelic drug DOI, without triggering hallucinations. The study revealed that DOI targets serotonin2A receptors on parvalbumin-positive neurons in the ventral hippocampus, decreasing anxiety behaviors in animal models.

Featured Neuroscience Open Neuroscience Articles Psychology

·October 3, 2024·2 min read

Faulty Brain Processes Behind Hearing Voices in Schizophrenia

A new study reveals that auditory hallucinations in schizophrenia may be caused by two faulty brain processes: a failed suppression of self-generated sounds and an overactive response to internal noises. The research showed that patients with hallucinations had a "broken" corollary discharge and an enhanced response to unintended sounds, compared to those without hallucinations. These findings suggest that future treatments for auditory hallucinations could target these disrupted processes.

Featured Neuroscience Visual Neuroscience

·September 10, 2024·5 min read

How Flickering Light Induces Hallucinations

A new study reveals how flickering lights can trigger hallucinations by causing standing waves in the brain's visual cortex. Researchers observed that high-frequency flickering lights create ripple-like waves of neural activity, which turn into standing waves at higher frequencies.

Featured Neurology Neuroscience Psychology

·March 12, 2024·6 min read

Hallucinations Enhance Social Number Misjudgment

Hallucinations, particularly presence hallucinations often experienced by individuals with Parkinson's disease, can lead to an increased overestimation of social numbers, such as the number of people in a room. This phenomenon does not extend to inanimate objects like boxes, underscoring the social nature of this overcounting.

Featured Neurology Neuroscience

·June 30, 2023·5 min read

Early Hallucinations in Parkinson’s Tied to Faster Cognitive Decline

Early hallucinations in Parkinson's disease patients might signal a faster cognitive decline. Through comprehensive neuropsychological interviews and electroencephalography measurements, researchers were able to link minor hallucinations, typically underreported, to more rapid deterioration of frontal executive function in subsequent years.

This shows a long road stretching off into the sunset

Featured Neuroscience Psychology

·April 7, 2022·4 min read

Recalled Experiences Surrounding Death: More Than Hallucinations?

Due to advances in resuscitation and critical care, many people are surviving near-death experiences. Survivors' recalled experiences are not consistent with hallucinations, but instead, follow a specific narrative arc involving perception.

This shows a drawing of a brain with squiggles showing the communication deficits

Auditory Neuroscience Featured Neuroscience Psychology

·March 23, 2022·4 min read

Brain Communication Defect in Psychotic Disorders

Reduced activation of gamma waves in the brain was associated with the emergence of psychosis symptoms prior to the full-blown disorder appearing.

Featured Neuroscience Psychology

·January 11, 2022·4 min read

Sleep Deprivation Increases Serotonin 2a Receptor Response in Brain

Sleep deprivation increases the levels of serotonin 2A neurotransmitter receptors within 6 - 8 hours. Abnormal serotonin 2A receptor function is associated with hallucinations, cognitive impairment, and is linked to psychiatric disorders such as schizophrenia.

Featured Neuroscience Open Neuroscience Articles Psychology

·October 26, 2021·4 min read

First Ever Body Maps of Hallucinations Created

Researchers have created the first body map of sensations experienced during hallucinations in people experiencing psychosis.

Featured Neuroscience Open Neuroscience Articles Psychology

·September 24, 2021·3 min read

Dysfunctional Synaptic Function Is Key to Schizophrenia

Schizophrenia itself is associated with loss of excitation, but hallucinations and other symptoms of the disorder are caused by a loss of synaptic inhibition.

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hallucinations

Study Ties Visual Errors to Paranoid Beliefs

Brain Circuits Behind Psychedelics’ Anti-Anxiety Power Decoded

Psychedelics Reduce Anxiety Without Hallucinations

Faulty Brain Processes Behind Hearing Voices in Schizophrenia

How Flickering Light Induces Hallucinations

Early Hallucinations in Parkinson’s Tied to Faster Cognitive Decline

Recalled Experiences Surrounding Death: More Than Hallucinations?

Brain Communication Defect in Psychotic Disorders

Sleep Deprivation Increases Serotonin 2a Receptor Response in Brain

First Ever Body Maps of Hallucinations Created

Dysfunctional Synaptic Function Is Key to Schizophrenia

Rare Brain Cells Offer Clues to Aging and Rejuvenation

Structural Sexism Tied to Faster Memory Decline in Older Women

Chronic Gut Virus May Play a Role in Alzheimer’s Development

AI Estimates Brain Age, Links Lifestyle to Cognitive Health

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