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The majority of studies on blindsight are conducted on patients who are hemianopic, i.e. blind in one-half of their visual field.Following the destruction of the left or right striate cortex, patients are asked to detect, localize, and discriminate amongst visual stimuli that are presented to their blind side, often in a forced-response or guessing situation, even though they may not ...
Anton syndrome, also known as Anton-Babinski syndrome and visual anosognosia, is a rare symptom of brain damage occurring in the occipital lobe.Those who have it are cortically blind, but affirm, often quite adamantly and in the face of clear evidence of their blindness, that they are capable of seeing.
Lawrence Weiskrantz FRS (28 March 1926 – 27 January 2018) was a British neuropsychologist.Weiskrantz is credited with discovering the phenomenon of blindsight, and with establishing the role of the amygdala in emotional learning and emotional behavior. [1]
The magician Harry Houdini with Joaquin María Argamasilla known as the "Spaniard with X-ray Eyes".. Dermo-optical perception (DOP, also known as dermal vision, dermo-optics, skin vision, skin reading, finger vision, cutaneous perception, digital sight, and bio-introscopy [1]) is a term that is used in parapsychological literature to denote the alleged capability to perceive colors ...
Recovery from blindness is the phenomenon of a blind person gaining the ability to see, usually as a result of medical treatment. As a thought experiment, the phenomenon is usually referred to as Molyneux's problem.
At an associative level, the meaning of an object is attached to the perceptual representation and the object is identified. [2] If a person is unable to recognize objects because they cannot perceive correct forms of the objects, although their knowledge of the objects is intact (i.e. they do not have anomia ), they have apperceptive agnosia.
The medical condition of deafblindness occurs in different forms. [3] For some, this condition might happen congenitally from birth as a result of genetic defect, for others it happens suddenly due to a form of illness or accident that results in a modality deprivation of either vision or hearing, or both. [8]
The Riddoch syndrome is a term coined by Zeki and Ffytche (1998) in a paper published in Brain. [1] The term acknowledges the work of George Riddoch who was the first to describe a condition in which a form of visual impairment, caused by lesions in the occipital lobe, leaves the sufferer blind but able to distinguish visual stimuli with specific characteristics when these appear in the ...