- Jennifer S. Kleiner
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Equipotentiality – a notion developed by Karl Spencer Lashley (1890–1958) positing that all areas of the brain are equally able to perform a task. This contrasts with the theory of localization, according to which neurocognitive functions are specifically referable to discrete areas of the brain; hence, damage to restricted regions would be expected to produce selective cognitive deficits. Equipotentiality theory, however, hypothesized that the severity of cognitive dysfunction was directly related to the total amount of tissue damage. For example, memory functioning was thought to be diffusely distributed throughout the cortex rather than related to defined circuits or pathways. Under this theory, intact areas of the cortex could assume responsibility for discrete cognitive functions following injury. The theory did allow, however, for localization related to sensory and motor processes. The related concept of “mass action” posited that cognitive functions are equa ...
- Lashley, K. S. (1929). Brain mechanisms and intelligence. Chicago: University of Chicago Press.
- Lashley, K. S. (1930). Basic neural mechanisms in behavior. Psychological Review, 37, 1–24.
- Reference Work Title
- Encyclopedia of Clinical Neuropsychology
- pp 969-970
- Print ISBN
- Online ISBN
- Springer New York
- Copyright Holder
- Springer Science+Business Media, LLC
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- Editor Affiliations
- 671. Physical Medicine and Rehabilitation, and Professor of Neurosurgery, and Psychiatry Virginia Commonwealth University – Medical Center Department of Physical Medicine and Rehabilitation
- 672. Kessler Foundation Research Center
- 673. Professor of Physical Medicine and Rehabilitation, and Neurology and Neuroscience, University of Medicine and Dentistry of New Jersey – New Jersey Medical School
- 674. Independent Practice
- Jennifer S. Kleiner (551)
- Author Affiliations
- 551. Department of Psychology, University of Arkansas for Medical Sciences Blandford Physician Center, Suite 410, 4301 West Markham Street, #568, 72205, Little Rock, AR, USA
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