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Equipotentiality

Definition

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