Disorders of motion and depth.
Damage to the human homologue of area MT produces a motion perception deficit similar to that found in the monkey with MT lesions. Even temporary disruption of MT processing with transcranial magnetic stimulation can produce a temporary akinetopsia [127]. Motion perception deficits, however, also are found with a variety of subcortical lesions and other neurologic disorders that can best be described as causing a disconnection within the motion processing stream. The precise role of these subcortical structures, such as the cerebellum, remains to be determined. Simple motion perception, moreover, is only a part of MT function. It undoubtedly has an important role in the perception of depth from motion and stereopsis [112]. Psychophysical studies using aftereffects in normal observers suggest a link between stereo mechanisms and the perception of depth from motion [9-11]. There is even a simple correlation between stereo acuity and the perception of depth from motion [128]. Future studies of patients with cortical lesions will take a closer look at depth perception in association with motion perception and should provide a better understanding of how motion and depth are processed together.
D000544:Alzheimer Disease / Q000150:complications / Q000503:physiopathology; D000550:Amblyopia / Q000150:complications / Q000503:physiopathology; D000928:Antidepressive Agents / Q000009:adverse effects; D002550:Cerebral Veins; D003463:Cues; D003867:Depth Perception / Q000502:physiology*; D004827:Epilepsy / Q000150:complications; D006801:Humans; D008636:Mesencephalon / Q000503:physiopathology; D009039:Motion Perception / Q000502:physiology*; D009778:Occipital Lobe / Q000098:blood supply / Q000503:physiopathology; D010468:Perceptual Disorders / Q000209:etiology / Q000503:physiopathology*; D010879:Piperazines; D012559:Schizophrenia / Q000150:complications / Q000503:physiopathology; D012851:Sinus Thrombosis, Intracranial / Q000150:complications / Q000503:physiopathology; D013702:Temporal Lobe / Q000098:blood supply / Q000503:physiopathology; D014230:Triazoles / Q000009:adverse effects; D015837:Vestibular Diseases / Q000150:complications / Q000503:physiopathology; D018980:Williams Syndrome / Q000150:complications / Q000503:physiopathology
D000928:Antidepressive Agents; D010879:Piperazines; D014230:Triazoles; C051752:nefazodone