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The frontal lobe of the human brain is both relatively large in mass and less restricted in movement than the posterior portion of the brain. [ 1] It is a component of the cerebral system, which supports goal directed behavior. [ 2] This lobe is often cited as the part of the brain responsible for the ability to decide between good and bad ...
Frontal lobe disorder, also frontal lobe syndrome, is an impairment of the frontal lobe of the brain due to disease or frontal lobe injury. [ 5] The frontal lobe plays a key role in executive functions such as motivation, planning, social behaviour, and speech production. Frontal lobe syndrome can be caused by a range of conditions including ...
Eyes aren't properly aligned and so the input the brain has to render is in mismatch, preventing correct 3D stereoscopic perception from happening. Amblyopia. Amblyopia, commonly known as “lazy eye”. It occurs when a single eye sends input to the brain while ignoring inputs from the other eye. This results in monocular vision.
Hemispatial neglect is a neuropsychological condition in which, after damage to one hemisphere of the brain (e.g. after a stroke ), a deficit in attention and awareness towards the side of space opposite brain damage (contralesional space) is observed. It is defined by the inability of a person to process and perceive stimuli towards the ...
Akinetopsia (from Greek akinesia 'absence of movement' and opsis 'seeing'), [1] also known as cerebral akinetopsia or motion blindness, is a term introduced by Semir Zeki to describe an extremely rare neuropsychological disorder, having only been documented in a handful of medical cases, in which a patient cannot perceive motion in their visual field, despite being able to see stationary ...
Monocular vision impairment refers to having no vision in one eye with adequate vision in the other. [ 2] Monopsia is a medical condition in humans who cannot perceive depth even though their two eyes are medically normal, healthy, and spaced apart in a normal way. Vision that perceives three-dimensional depth requires more than parallax.
The frontal eye fields ( FEF) are a region located in the frontal cortex, more specifically in Brodmann area 8 or BA8, [ 1] of the primate brain. In humans, it can be more accurately said to lie in a region around the intersection of the middle frontal gyrus with the precentral gyrus, consisting of a frontal and parietal portion. [ 2]
There is one set of upper and lower divisions on each side of the brain. If a lesion only exists in one unilateral division of the optic radiation, the consequence is called quadrantanopia, which implies that only the respective superior or inferior quadrant of the visual field is affected. If both divisions on one side of the brain are ...