Equipotentiality
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Equipotentiality refers to a psychological theory in both neuropsychology and behaviorism.
[edit] In neuropsychology
In neuropsychology, equipotentiality is a neurological principle that describes a cortical mechanism, first identified by Karl Lashley.
Lashley offered two generalizations from his research, that recently have been successfully challenged but nonetheless represent important milestones in the development of neurological theory:
- Although surgical removal of a portion of the cortex can produce significant behavioral deficits, those deficits can be recovered through additional training and time, by way of the development of new neuronal connections. Lashley argued that the brain is sufficiently plastic, such that when one region of the brain is surgically removed (or damaged through injury) another region takes over the damaged regions function. This is the principle Lashley referred to as equipotentiality. Extensive regions of the cerebral cortex have the potentiality for mediating specific learning and memory functions.
- His principle of "mass action" stated that the cerebral cortex acts as one—as a whole—in many types of learning.
[edit] See also
[edit] In behaviorism
In behaviorism, the theory of equipotentiality suggests that any two stimuli can be associated in the brain, regardless of their nature. It proposes that all forms of associative learning, both classical (Pavlovian) and operant (Skinnerian) involve the same underlying mechanisms. However, food avoidance experiments have questioned its application.
