Lashley trained rats on a variety of mazes, then made deep cuts in their cortexes. He found that the cuts produced little apparent effect.
Lashley pioneered experimental work conducted on rats with surgically induced brain lesions, by damaging or removing specific areas of a rat's cortex, either before or after the animals were trained in mazes and visual discrimination.
Moreover, in searching for a localized storage point in the brain for learned information, termed an ''engram,'' Karl Lashley developed numerous rodent mazes in the early 20th century.
Hence, this principle concludes that the localization of certain brain functions is not necessarily concrete. Lashley discovered the principle of equipotentiality through his experimentation with rats in mazes. He found that the rats improved their performance in the maze over time.
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