The Vicarious Brain, Creator of Worlds by Alain Berthoz & Giselle Weiss

Author:Alain Berthoz & Giselle Weiss
Language: eng
Format: epub
Tags: Psychology, Cognitive Neuroscience & Cognitive Neuropsychology, science, Life Sciences, Neuroscience
Publisher: Harvard University Press
Published: 2017-01-09T00:00:00+00:00

The Bottleneck Hypothesis

A paradoxical consequence of cerebral vicariance may be bottlenecks in certain areas. For example, damage to the language region on the left side may be compensated for by activity on the right side. Yet the right brain is normally involved in visuospatial tasks. Thus competition may arise (whence the term “bottleneck”) in the right hemisphere. This problem has also been studied in healthy subjects. In fact, in 1 percent of right-handed people and 10 percent of left-handed people, the language area is on the right side of the brain. Curiously, this shift does not always negatively affect visuospatial tasks. The inverse may be observed: that is, the left cortex may take over the visuospatial functions normally carried out by the right cortex. The brain does indeed possess many strategies for implementing vicariance.

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