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Cerebral Hemispheres

Cerebral Hemispheres

The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...

What is a Sensory System?

What is a Sensory System?

Sensory systems detect stimuli—such as light and sound waves—and transduce them into neural signals that can be interpreted by the nervous system. In addition to external stimuli detected by the senses, some sensory systems detect internal stimuli—such as the proprioceptors in muscles and tendons that send feedback about limb position.

Hearing

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.

Vision

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.

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Related Experiment Video

Updated: Jan 29, 2026

Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat

Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat

Published on: February 5, 2011

Cerebral Amyloidoma.

Anna Maheux¹, Julien Savatovsky¹, Augstin Lecler¹

¹Department of Radiology, Fondation Ophtalmologique Adolphe de Rothschild, Paris, France.

World Neurosurgery

|February 11, 2019

Summary

This summary is machine-generated.

Cerebral amyloidoma, a rare central nervous system disease, can cause visual issues and temporal lobe lesions. Advanced imaging and monitoring may prevent invasive biopsies for this condition.

Keywords:

Cerebral amyloidoma

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Published on: May 17, 2024

Isolation and Cannulation of Cerebral Parenchymal Arterioles

Isolation and Cannulation of Cerebral Parenchymal Arterioles

Published on: May 23, 2016

Related Experiment Videos

Last Updated: Jan 29, 2026

Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat

Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat

Published on: February 5, 2011

A Rat Model of Middle Cerebral Artery Occlusion/Reperfusion Without Damaging the Anatomical Structure of Cerebral Vessels

A Rat Model of Middle Cerebral Artery Occlusion/Reperfusion Without Damaging the Anatomical Structure of Cerebral Vessels

Published on: May 17, 2024

Isolation and Cannulation of Cerebral Parenchymal Arterioles

Isolation and Cannulation of Cerebral Parenchymal Arterioles

Published on: May 23, 2016

Area of Science:

Neurology
Neuroradiology
Pathology

Background:

Cerebral amyloidoma is an exceedingly rare manifestation of central nervous system amyloidosis.
Amyloid deposition in the brain typically presents with diverse neurological symptoms.

Observation:

A patient presented with visual disturbances and an infiltrating temporal lobe lesion identified via magnetic resonance imaging.
The lesion's characteristics on MRI suggested a potential diagnosis of cerebral amyloidoma.

Findings:

The case highlights the diagnostic challenges posed by cerebral amyloidoma.
Magnetic resonance imaging is crucial for characterizing these rare brain lesions.

Implications:

Early and accurate diagnosis of cerebral amyloidoma through advanced imaging can guide clinical management.
Non-invasive diagnostic approaches and close patient follow-up may obviate the need for potentially risky biopsies.