Final answer:
Prism goggles are effective in treating neglect because they leverage the visual cortex's ability to adapt to altered visual input, as demonstrated by a 1960s experiment where subjects learned to perceive an inverted visual field correctly after adaptation.
Step-by-step explanation:
Prism goggles are an effective treatment for neglect due to the evidence that the visual cortex has the ability to adapt to altered visual input. An experiment conducted in the 1960s demonstrated this by having subjects wear prism glasses which inverted their visual field. Initially, subjects had difficulty navigating their environment, but after a period of adaptation, they were able to perceive the visual information correctly despite the inversion caused by the goggles. This experiment illustrates how the brain can adjust to changes in visual stimuli, which is the principle behind using prism goggles as a rehabilitative measure for neglect. However, after a few days of wearing the glasses, the subjects adapted and their visual cortex adjusted to the new information, allowing them to behave as if everything were represented correctly.