What is the disconnection syndrome?

Functional disconnection syndrome is where the right and left hemispheres of the brain are developing at different rates. Due to this difference in maturation, the brain is unable to connect, communicate, and share information appropriately.

What is posterior disconnection syndrome?

Disconnection syndrome is a general term for a collection of neurological symptoms caused — via lesions to associational or commissural nerve fibres — by damage to the white matter axons of communication pathways in the cerebrum (not to be confused with the cerebellum), independent of any lesions to the cortex.

Which brain structure is associated with disconnection syndrome?

Split-brain syndrome, also called callosal disconnection syndrome, condition characterized by a cluster of neurological abnormalities arising from the partial or complete severing or lesioning of the corpus callosum, the bundle of nerves that connects the right and left hemispheres of the brain.

Why is there a disconnect between vision and speech?

This is because the image seen in the left visual field is sent only to the right side of the brain (see optic tract), and most people’s speech-control center is on the left side of the brain.

What is Gerstmann syndrome?

Gerstmann’s syndrome is a cognitive impairment that results from damage to a specific area of the brain — the left parietal lobe in the region of the angular gyrus. It may occur after a stroke or in association with damage to the parietal lobe.

What is meant by disconnection?

1 : to sever the connection of or between. 2 : dissociate sense 1 are disconnected from meaningful relationships. intransitive verb. 1 : to terminate a connection. 2 : to become detached or withdrawn disconnects into dark moods.

How is disconnection syndrome treated?

The best way to treat a Functional Disconnection is, first of all, to identify where the functional weakness is. Then, you use environmental stimuli—movement, sound, touch, taste, cognitive, academic, and dietary types of stimulation—because the brain responds the best to environmental stimuli.

What happens when corpus callosum is damaged?

Lesions of any part of the corpus callosum might lead to loss of contact between bilateral hemispheres that cause mental disorders, pseudobulbar palsy, speech and movement ataxia.

What are the long term effects of a hemispherectomy?

Key findings: At a mean follow-up of 6.05 years after hemispherectomy, 70 patients (56%) were seizure-free and 45 (36%) had seizure recurrence; 10 patients (8%) were free of their preoperative seizures but had new-onset nonepileptic spells and were excluded from further analysis.

What are the signs and symptoms of Gerstmann syndrome?

Gerstmann syndrome is a rare disorder characterized by the loss of four specific neurological functions: Inability to write (dysgraphia or agraphia), the loss of the ability to do mathematics (acalculia), the inability to identify one’s own or another’s fingers (finger agnosia), and inability to make the distinction …

What are the symptoms of Gerstmann syndrome?

It is characterized by four primary symptoms: a writing disability (agraphia or dysgraphia), a lack of understanding of the rules for calculation or arithmetic (acalculia or dyscalculia), an inability to distinguish right from left, and an inability to identify fingers (finger agnosia).

How did the concept of disconnection syndrome come about?

However, studies have shown that when the hemispheres are disconnected, the individual does not hear anything from the left and only hears from the right. The concept of disconnection syndrome emerged in the late nineteenth century when scientists became aware that certain neurological disorders result from communication problems among brain areas.

Which is an example of commissural disconnection syndrome?

An example is commissural disconnect in adults which usually results from surgical intervention, tumor, or interruption of the blood supply to the corpus callosum or the immediately adjacent structures. Callosal disconnection syndrome is characterized by left ideomotor apraxia and left-hand agraphia and/or tactile anomia, and is relatively rare.

What did Norman Geschwind write about disconnection syndrome?

Dejerine interpreted this case as a disconnection of the speech area in the left hemisphere from the right visual cortex. In 1965, Norman Geschwind, an American neurologist, wrote ‘Disconnexion syndromes in animals and man’ where he described a disconnectionist framework that revolutionized neurosciences and clinical neurology.

What are the symptoms of white matter disconnection syndrome?

Disconnection syndrome is a general term for a number of neurological symptoms caused by damage to the white matter axons of communication pathways—via lesions to association fibers or commissural fibers—in the cerebrum, independent of any lesions to the cortex. The behavioral effects of such disconnections are relatively predictable in adults.