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Cloned from: Brain

by dr

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Left Brain
- associated w. verbal, logical, & analytical thinking - excels in naming & categorizing things, symbolic abstraction, speech, reading, writing, & arithmetic - very linear & sequential - master of reading, writing, & arithmetic
Right Brain
- non-verbal manner & excels in visual, spatial, perceptual, & intuitive info - processes things very quickly, nonlinear, & nonsequential - deals w. complexity, ambiguity, & paradox - realm of creativity
Frontal Lobe Motor Area
- Functions: controls contralateral movement - Dysfunctions: contralateral spastic paresis
Frontal Lobe Prefrontal Area
- Functions: critical for personality, abstract thought, judgement - Dysfunctions: "Frontal lobe syndrome": disinhibited, facetious humour, apathy, distractible perseveration, urinary incontinence
Temporal Lobe Hippocampus
- Functions: Episodic memory - Dysfunctions: bilateral lesions cause an amnestic syndrome
Parietal Lobe
- Functions: receives & identifies tactile info - Dysfunctions: cortical sensory loss [i.e. impaired 2 point discrimination]
Parietal Lobe
- Functions: processes visual & auditory sensations - Dysfunctions: agnosias & apraxias. Dominant: right-left orientation, literacy & numeracy impaired
Parietal Lobe
- Functions: planning & sequencing of motor acts - Dysfunctions: non-dominant loss visuospatial & body awareness, L-spatial neglect, anasagnosia & autotopagnosia
Occipital Lobe
- Functions: interprets visual images - Dysfunctions: disturbed spatial orientation. Visual illusions & hallucinations. Cortical blindness
failure of language output [may be motor, sensory, syntactical, nominal, receptive, expressive] - nonfluent: minimal speech activity w. slow speech that requires obvious effort - fluent: speech present but contains little meaningful communication - global aphasia: all communication & receptive function lost
failure to identify or recognize objects despite intact sensory function
failure to recognize ones own physical disability
misidentifies parts of own body
Topographical Agnosia
unable to orientate to familiar geography
ignores half of body
Tactile Agnosia
unable to recognize letters or shapes traced on hand
does not recognize familiar objects by touch alone
failure to carry out motor function despite intact sense organs & peripheral motor system
Constructional Apraxia
unable to copy design using pen/matchsticks, blocks etc. [may be a visuospatial agnosia]
Dressing Apraxia
unable to dress self
Disturbance in muscular control of speech. may involve pronunciation, articulation, & phonation. It affects mechanics of speech
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