Agnosia Types Flashcards
a patient who can’t recognize that there is something touching his left arm is suffering from ??
Astereoagnosia
Inability to recognize the form of objects through touch “ commonly associated w/ left sided paralysis”
A patient in the hospital can’t know who brought this hand/arm to the left side of his bed!
He is suffering from?
Asomatognosia
a deficit in self image of the left side
Deficit in perceiving the external world on the left
Spatial agnosia
When you ask the patient to remember something and he can remember it but with neglecting the left side of the image, he is suffering from?
Representational agnosia
Due to injury to right parietal lobe
Moh. Can draw a circle, clouds, sky ,etc.. but he can’t name them, he is suffering from?
Associative agnosia
due to lesion to occipito-temporal regions of both hemispheres or lesion to posterior parietal cortex
Ali can name things but he can’t draw them, he is suffering from?
Appreceptive agnosia
Due to diffuse damage to the occipital lobe and surrounding areas
Principal sulcus location
Prefrontal cortex ie part of anterior association area
Function of neurons in principal sulcus
They use stored knowledge to guide motor response at a later time
Function or dorsolateral prefrontal cortex
Combine the what and where of an object
The parietal cortex is involved in
FOCUSING on object in space ie attention dependent
The differential processing of the visual system
Dorsal stream: takes info to the parietal association cortex—> position, motion, speed
Ventral steam: takes info to temporal association cortex—>color, shape, texture
Differential processing of the auditory and somatosensory system
Dorsal pathway: motor and spacial functions ie where in space
Ventral pathway: recognizing
Damage to dorsal part of parietal cortex leads to
Impairment of body awareness
Affects motor control
Affects visual guidance of motor behavior
Damage to ventral part of parietal cortex
Deficit in spatial perception and cognition
