#corpus collosum

[reallyweirdrealworld]

Alien Hand Syndrome: A Real Condition Behind “Evil” Limbs

Imagine your hand having a mind of its own, one that could let it attack you or other people...

Alien hand syndrome can happen when the human brain gets injured (or of the hemispheres are is surgically severed) and results in a limb with it's own personality - one that may even attack the sufferer or other people!

[al3ph7-blog]

Corpus Collosum

[africulturelle]

Appel à candidatures RAW Académie Session 4

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[whatshappeningtothekids]

Crosstalk Between Left and Right Hemisphere Is Key to Language Development

“Weak” connection shunts language to wrong side of the brain and decreases verbal IQ, researchers say.

Proper communication between the left and right sides of the brain is critical for the development of advanced language skills, according to new research by UC San Francisco scientists. In most people, areas related to language processing are located in the brain’s left hemisphere. The researchers suggest that autism-like problems with language comprehension seen in people with defective connections between the two hemispheres may occur because these individuals tend to use the right side of the brain to process language instead of the left.

The research — published in the April 20, 2016 issue of the Journal of Neuroscience — is the first large-scale study of rare individuals born missing key connections between the brain’s left and right hemispheres and suggests that the left-hemisphere’s normal specialization for language processing may be more important for the development language skills than was previously realized.

“The Contribution of the Corpus Callosum to Language Lateralization” by Leighton B.N. Hinkley, Elysa J. Marco, Ethan G. Brown, Polina Bukshpun, Jacquelyn Gold, Susanna Hill, Anne M. Findlay, Rita J. Jeremy, Mari L. Wakahiro, A. James Barkovich, Pratik Mukherjee, Elliott H. Sherr, and Srikantan S. Nagarajan in Journal of Neuroscience. Published online April 20 2016 doi:10.1523/JNEUROSCI.3850-14.2016

Agenesis of the corpus callosum also is associated with intellectual disability and autism-like social and cognitive deficits. Image is for illustrative purposes only.

[ojosdemielycorazondulce]

Remember, the corpus collosum is the thing in the middle. (of the brain, it relays information between the left and right hemispheres)

[bodaciousholidaymakers]

Master Post: Corpus Collosum

[whenyournotesfailyou]

Sperry (1968) - ‘Hemisphere deconnection and unity in conscious awareness’

Aim: To show the behavioural and psychological effects when the brain is split into two by severing the corpus collosum. This is to prove that each side of the brain has different functions. Method: Participants are patients who had epilepsy until they have undergone an operation by severing the corpus collosum. Design: Natural experiment Procedure: Since each hemisphere receives information from the opposite side of the body, if images are presented visually, they would have to be presented at a duration of 1 tenth of a second so that the eye does not have enough time to refocus and therefore is sent to the opposite hemisphere. If tactile objects are presented, the information received by touch from one hand would be sent to the opposite hemisphere. Results The results show that the separate hemispheres have different functions and abilities. If a visual is shown to the right eye, received in the left hemisphere, the person would be able to use speech to say what it is. However, if it was done in reverse, the person would not be able to say what the image is and can only be identified through pointing. This is when the visual is presented one at a time. When visuals are presented both at once, the person can name what the image was if it was received through the left hemisphere, however, as for the right hemisphere, the only way to know is to draw the image out with the left hand. Tactile stimuli - If information is received in the left eye and the person is needed to pick up the object, he would grab the correct one without knowing why. If it’s the right eye, he would be able to pick out the object and know why he did so. Evaluation methodological validity - being a natural experiment, lack of control over variables. Theoretical - Research has revealed many differences. Findings appear most in right-handed men. It must keep in mind that the left and right hemispheres share many functions that are highly integrated. Applications: Implications for helping those with brain damage.