the visual cortex on the right hemisphere receives visual information from the inferior temporal lobe.
the visual cortex on the right hemisphere receives visual information from the inferior temporal lobe.
the visual cortex on the right hemisphere receives visual information from the?
inferior temporal lobe
both the lgn in the right hemisphere and the lgn in the left hemisphere receive input from each eye. however, each lgn only receives information from one half of the visual field. this occurs due to axons of the ganglion cells from the inner halves of the retina (the nasal sides) decussating (crossing to the other side of the brain) through the optic chiasma ("khiasma" means "cross-shaped"). the axons of the ganglion cells from the outer half of the retina (the temporal sides) remain on the same side of the brain. therefore, the right hemisphere receives visual information from the left visual field, and the left hemisphere receives visual information from the right visual field.
lateral geniculate nucleus
the discovery of the condition known as blindsight raised questions about how different types of visual information, even unconscious information, may be affected and sometimes even unaffected by damage to different areas of the visual cortex. previous studies had already demonstrated that even without conscious awareness of visual stimuli that humans could still determine certain visual features such as presence in the visual field, shape, orientation and movement. but, in a newer study evidence showed that if the damage to the visual cortex occurs in areas above the primary visual cortex the conscious awareness of visual stimuli itself is not damaged. blindsight is a phenomenon that shows that even when the primary visual cortex is damaged or removed a person can still perform actions guided by unconscious visual information. so even when damage occurs in the area necessary for conscious awareness of visual information, other functions of the processing of these visual percepts are still available to the individual. the same also goes for damage to other areas of the visual cortex. if an area of the cortex that is responsible for a certain function is damaged, it will only result in the loss of that particular function or aspect, functions that other parts of the visual cortex are responsible for remain intact.
blindsight