Anatomy and Cell Biology 3319 Lecture Notes - Lecture 12: List Of Thalamic Nuclei, Amygdala, Entorhinal Cortex
19 Oct 2016
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Define agnosia, apraxia, aphasia and aphonia and recognize symptoms that are associated with specific lesions of the cerebral cortex. Agnosia a defect in understanding sensory information. Apraxia impairment in the performance of learned movements (purposive actions) Aphasia damage to language areas or their connections (left hemisphere) Aphonia inability to produce sounds or speech. Damage to sensory association areas (somatosensory, visual, auditory: tactile agnosia damage to somatosensory association area, visual agnosia damage to visual association area, auditory agnosia damage to auditory association area. Ideomotor apraxia difficulty in initiating movements based on memory (e. g. comb hair: damage in pmaa. Kinetic apraxia difficulty in making precise movements of the limbs: damage to primary motor cortex. Gait apraxia difficulty making walking or running movements: damage to premotor cortex. Aphonia is the complete inability to produce vocal sounds: caused by damage to primary motor cortex. Executive aphasia (cid:894)bro(cid:272)a(cid:859)s aphasia(cid:895) difficulty initiating speech, speech is non-fluent: da(cid:373)age to bro(cid:272)a(cid:859)s area i(cid:374) pre(cid:373)otor (cid:272)orte(cid:454)
