Lashley trained rats on a variety of mazes, then made deep cuts in their cortexes. He found that the cuts produced ____.
A) a temporary impairment
B) a permanent impairment
C) day-to-day fluctuations in performance
D) little apparent effect

Question

Quizplus · Accepted Answer

Lashley's research led to the principle of "mass action," suggesting that the extent of learning impairment was related to the amount of cortex damaged, rather than the specific location of the damage. His findings showed that deep cuts in the cortex had little apparent effect on the rats' ability to perform tasks they had learned, indicating that learning and memory are not localized to one part of the brain but are distributed throughout.

Lashley Trained Rats on a Variety of Mazes, Then Made