Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Visual Agnosia

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...

Color Vision

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.

Prosopagnosia

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Integrated analysis of nutritional composition, phytochemical, and antioxidant activity in Cotoneaster microphyllus (Wall. ex Lindl.).

Scientific reports·2026

Same author

Atomic-Level Synergy of Dual Single-Atom Catalysts for Photocatalytic Hydrogen Evolution Reaction.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

Silver nanoparticles biosynthesized by Citrobacter farmeri effectively inhibit growth and biofilm formation in Acinetobacter baumannii.

Microbial pathogenesis·2026

Same author

Deep brain stimulation for the treatment of paediatric dystonia due to neuroanatomical abnormalities: a systematic review of efficacy and future perspectives.

BMJ neurology open·2026

Same author

Global dataset of soil eukaryotic communities created with a uniform protocol and long read sequencing.

Scientific data·2026

Same author

Therapeutic potential of a novel spirocyclic molecule in a murine model of peripheral nerve injury mediated via anti-inflammatory and neuroprotective properties.

Molecular biology reports·2026

Search research articles

Related Experiment Video

Updated: Apr 15, 2026

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Published on: August 11, 2023

Transient Visual Hallucinations due to Posterior Callosal Stroke.

Gaurav Nagarajan Ghosh¹, Victor Wycoco², Soumya Ghosh³

¹Department of Neurology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia.

Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association

|March 24, 2015

Summary

A rare case of stroke affecting the corpus callosum caused transient visual hallucinations in a 71-year-old woman. This is the first reported instance of such a symptom following a callosal stroke.

Keywords:

Stroke corpus callosum forceps major visual hallucinations

More Related Videos

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats

Published on: April 21, 2017

Randomized, Triple-Blind, and Parallel-Controlled Trial of Transcranial Direct Current Stimulation for Cognitive Rehabilitation after Stroke

Randomized, Triple-Blind, and Parallel-Controlled Trial of Transcranial Direct Current Stimulation for Cognitive Rehabilitation after Stroke

Published on: June 6, 2025

Related Experiment Videos

Last Updated: Apr 15, 2026

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Published on: August 11, 2023

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats

Published on: April 21, 2017

Randomized, Triple-Blind, and Parallel-Controlled Trial of Transcranial Direct Current Stimulation for Cognitive Rehabilitation after Stroke

Randomized, Triple-Blind, and Parallel-Controlled Trial of Transcranial Direct Current Stimulation for Cognitive Rehabilitation after Stroke

Published on: June 6, 2025

Area of Science:

Neurology
Neuroscience
Medical Case Reports

Background:

Stroke of the corpus callosum is rare and typically associated with higher brain function disturbances.
Visual hallucinations have not been previously reported as a symptom of corpus callosum stroke.

Observation:

A 71-year-old woman presented with a 3-day history of intermittent, formed visual hallucinations in her left visual field.
Symptoms were often triggered by eye closure or darkness.

Findings:

Neurologic examination, including cognitive and visual assessments, was normal.
Magnetic resonance imaging revealed a small stroke in the right inferior forceps major of the corpus callosum.
Visual hallucinations resolved spontaneously within two days of admission.

Implications:

This case represents the first documented instance of transient visual hallucinations secondary to a corpus callosum stroke.
Highlights the diverse and uncommon presentations of cerebrovascular events.
Suggests considering callosal stroke in the differential diagnosis of visual disturbances.