agnosias and spatial Flashcards
somatoagnosia
lack of awareness of relationship of body parts
lesion: usually dominant parietal lobe
Right-Left Discrimination
Decreased R/L differentiation with body parts and with following directions
Lesion: either parietal lobe
Pusher Syndrome
Lesion: R hemisphere posterolateral thalamus
leaning and active pushing toward hemiplegic side without compensation for instability and with resistance to passive correction toward midline.
tends to be more common when L hemiplegia present and alongside L spatial and sensory neglect
Figure Ground
Inability to distinguish a figure from the background in which it’s ebedded
Spatial Relations Disorder
Inability to perceive relationship of one object in space with another object, or one’s self
Lesion: R inferior parietal lobe
Position in space disorder
decreased ability to perceive and interpret spatial concepts
Topographic disorientation
Difficulty perceiving relationships from location to another in the environment
Depth and distance perception
Inaccurate judgement of direction, distance, and depth
Lesion: R or Bil visual association cortex
Visual Agnosia
Inability to recognize familiar objects despite normal eye function
Lesion: L temporal lobe
Auditory Agnosia
Inability to recognize non-speech sounds or discriminate between them
Lesion: L temporal lobe
Tactile Agnosia
Inability to recognize objects when handling them despite normal tactile sensations
Lesion: parietal/temoporal/occipital association areas L or R
Anosognosia
denial or lack of awareness of presence or severity of one’s deficits. May deny ownership of limbs.
Apraxia
Impairment of voluntary, skilled, well learned movement
Lesion: L frontal or parietal
Ideomotor apraxia
breakdown between concept and performance
ideational
Failure in conceptualization of the task
