In a Right handed person, left parietal lobe injury may be associated with all except. (AI 1992)
|D||Inferior quadrantic Anopsia|
Cortical function (Parietal lobe)
1. Two point discrimination
4. Touch localization (Bilateral simultaneous stimulation.)
Features of parietal lobe lesions
1. Unilateral Parietal Lobe
i. Contralateral hemisensory loss
iv. Contralateral homonymous Lower quadrantanopia
v. Asymmetry of optokinetic Nystagmus (OKN)
vi. Sensory Seizures
vii. Extinction phenomenon (contralateral)
2. Dominant Hemisphere
i. Dysphasia / Aphasia
iv. Tactile Agnosia
v. Gerstmann Syndrome
3. Non Dominant Hemisphere
i. Spatial disorientation
ii. Constructional apraxia
iii. Dressing apraxia (Ref. Hari-18th ed., pg 208)
1. Anosognosia is a condition in which a person who suffers disability seems unaware of the existence of his or her disability.
2. Dyslexia is a learning disability that impairs a person's fluency or comprehension accuracy in being able to read.
3. Astereognosis - Inability to determine 3-D shape by touch.
4. Agraphesthesia – Inability to ‘read’ numbers or letters drawn on hand, with eyes shut.
5. Apraxia – Inability to perform complex movements in the presence of normal motor, sensory and cerebellar function.
6. Agnosia – Inability to recognize or discriminate.
Extra Edge: Gerstmann syndrome (Dominant parietal lobe disease (Ref. Hari-18th ed., Pg- 206)
Features: 1. Acalculia 2. Agraphia 3. Finger anomia 4. Difficulty in differentiation of right and left
Recent Advances: Hemineglect or neglect of contralateral side is a feature of either of Parietal lobe lesion (Ref. Hari-18th ed., Pg- 207)