Term
| Middle Cerebral Artery Stroke effects |
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Definition
| If not death, hemiparesis or hemiplegia, visual field loss, aphasia (usually left hemisphere), apraxia (usually left hemisphere), neglect (usually right hemisphere) |
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Term
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Definition
| weakness on one side of body |
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Term
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Definition
| paralysis on one side of body |
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Term
| posterior parietal cortex |
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Definition
| parietal cortex except for postcentral gyrus (primary somatosensory cortex), includes inferior and superior parietal lobules |
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Term
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Definition
| bottom part of posterior parietal cortex, side borders sensory homunculus and bottom borders the temporal lobe, includes supramarginal and angular gyri |
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Term
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Definition
| fissure that divides the superior parietal lobule from the inferior parietal lobule |
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Term
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Definition
| difficulty finding your way around (getting lost), recognising objects from different perspectives (mental rotation), mentally transforming viewpoints, copying and constructing objects, attending to objects, telling fingers apart, usually result of inferior parietal lesions, often on the right |
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Term
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Definition
| the area around your body |
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Term
| topographical dysfunction |
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Definition
| getting lost in environments that one should not get lost in, like familiar routes, one's own neighborhood, or own home |
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Term
| topographical disorientation |
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Definition
| fail to find one's way around what should be a familiar environment, but retain related rote verbal knowledge, i.e. bus stops along route, usually bilateral or right-sided lesions in posterior parietal, subtypes agnosia and amnesia |
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Term
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Definition
| fail to find their way in previously familiar surroundings, but may be able to draw a map of the correct route, or verbally describe the spatial complexities of a route (go to here, then turn left...), fail to recognise familiar buildings, or famous buildings, lesion site is inferior occipito-temporal, often with prosopagnosia |
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Term
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Definition
| fail to find their way around, possibly because of a spatial deficit, can't draw a map of familiar or new environments, mislocate cities and countries on a map, can correctly recognise buildings and rooms once they reach them, lesion site is the inferior parietal lobule (more commonly on the right) |
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Term
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Definition
| mental representation of areas with landmarks, paths, nodes, districts, edges, distances, and directions |
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Term
| developmental topographical disorientation |
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Definition
| lifelong topographical disorientation without any trauma or stroke to brain, normal brain scans, navigational abilities are just never developed |
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Term
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Definition
| intact object recognition but cannot recognise known objects from an odd perspective, in silhouette, when fragmented, or in unusual lighting, lesion site similar to that of patients who cannot perform mental rotation tasks |
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Term
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Definition
| inability to recognise a person from their face, do know that they are seeing a face but must use other cues to recognise a person; bilateral occipito-temporal or right hemisphere lesions, very debilitating |
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Term
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Definition
| inability to appreciate spatial relationships between objects or parts of objects |
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Term
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Definition
| failure to attend to the contralateral side of the world, unexplained by hemianopia or other sensory deficits, usually neglect of left side after right parietal lesions (but can be other cortical and subcortical), sometimes with representational neglect, usually multimodal but can be unimodal, often with anosognosia |
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Term
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Definition
| characteristic found in hemispatial neglect where stimulus is perceivable on the 'bad' side if nothing is on the 'good' side, but not visible if something is presented on 'good' side at the same time; often multimodal, but can be unimodal (just visual, just auditory, or just tactile) |
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Term
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Definition
| inattention in the 'mind's eye' from an egocentric perspective, will detail previously neglected side when they imagine the scene as though they are looking from the other side, thus information from both sides is available but not always accessed; Milan square experiment |
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Term
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Definition
| difficulty moving eyes or hands to neglected side, indication that hemispatial neglect may sometimes have a motor component |
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Definition
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Term
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Definition
| denial of deficit or disability, may not be denial of all deficits, difficult to treat |
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Term
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Definition
| denial of ownership of paralysed limb |
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Term
| somatoparaphrenic delusion |
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Definition
| confabulations about disowned limb, i.e. anarchic hand |
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Term
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Definition
| indifference to paralysed limb |
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Term
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Definition
| hostility toward paralysed limb |
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