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Roger Wolcott Sperry pioneered the inception of the chemoaffinity hypothesis following his 1960s experiments on the African clawed frog. [2] He would remove the eye of a frog and reinsert it rotated upside-down—the visual nervous system would eventually repair itself, [3] and the frog would exhibit inverted vision.
Roger Wolcott Sperry (August 20, 1913 – April 17, 1994) was an American neuropsychologist, neurobiologist, cognitive neuroscientist, and Nobel laureate who, together with David Hunter Hubel [1] and Torsten Nils Wiesel, won the 1981 Nobel Prize in Physiology and Medicine for his work with split-brain research.
Notable researchers in the field include Roger Sperry, one of the first to publish ideas involving a dual consciousness, and his famous graduate student, Michael Gazzaniga. Their results found a pattern among patients: severing the entire corpus callosum stops the interhemispheric transfer of perceptual, sensory, motor, and other forms of ...
The corollary discharge theory (CD) of motion perception helps understand how the brain can detect motion through the visual system, even though the body is not moving. When a signal is sent from the motor cortex of the brain to the eye muscles, a copy of that signal (see efference copy ) is sent through the brain as well.
Julian Jaynes hypothesized a bicameral mind theory (which relies heavily on Gazzaniga's research on split-brain patients), where the communication between Wernicke's area and its right-hemisphere analogue was the "bicameral" structure. This structure resulted in voices/images that represented mostly warning and survival instruction, originating ...
The idea of direct perception-action links originates in the work of the American psychologist William James and more recently, American neurophysiologist and Nobel prize winner Roger Sperry. Sperry argued that the perception–action cycle is the fundamental logic of the nervous system. [2]
During the 1960s, Roger Sperry conducted a natural experiment on epileptic patients who had previously had their corpora callosa cut. The corpus callosum is the area of the brain dedicated to linking both the right and left hemisphere together.
Roger Sperry and his colleagues pioneered research showing that creating another lesion (done to relieve otherwise untreatable epilepsy), in the connections between the left and right hemispheres, revealed that the right hemisphere can allow people to read, to understand speech, and to say some simple words. Research over the next twenty years ...