Mass Action Principle (neuroscience)

In neuroscience, the mass action principle suggests that the proportion of the brain that is injured is directly proportional to the decreased ability of memory functions. In other words, memory cannot be localized to a single cortical area, but is instead distributed throughout the cortex. This theory is contrasted by functional specialization. This is one of two principles that Karl Lashley published in 1950, alongside the equipotentiality principle.