Tuesday, September 20, 2011

                                                  BRAIN LESIONS

Area of lesion
Consequence
Amygdale(bilateral)
Klüver-Bucy syndrome (hyperorality, hypersexuality, disinhibited behavior)
Frontal lobe
Disinhibition and deficit in concentration, orientation, and judgment; may have reemergence of primitive reflexes
Right parietal lobe
Spatial neglect syndrome (agnosia of the contralateral side of the world)
Reticular activating system (midbrain)
Reduce levels of arousal and wakefulness
Mamillary bodies (bilateral)
Wernicke-Korsakoff syndrome
Basal ganglia
Tremor at rest, chorea, or athetosis
Cerebellar hemisphere
Intention tremor, limb ataxia; damage of cerebellum result in ipsilateral deficit, fall toward side of lesion
Cerebellar vermis
Truncal ataxia, dysarthria
Subthalamic nucleus
Contralateral hemibalismus
Hippocampus
Anterograde amnesia
Paramedian pontine reticula formation
Eyes look away from site of lesion
Frontal eyes fields
Eyes look toward lesion


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