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Functional Neuroanatomy
Cerebellum, Basal Ganglia, Descending Pathways
16
Biology
Undergraduate 4
11/19/2009

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Term
Efference Copy
Definition
A copy of the sensory informatio sent from the primary motor cortex to the cerebro-cerebellum
Term
Truncal Ataxia
Definition
Difficulty sitting or standing without support.
Term
Wernicke's encephalopathy
Definition
Permanent nystagmus, ataxia, dysarthria, and gait ataxia due to chronic alcohol abuse
Term
Dysmetria
Definition
Errors in the smoothness and direction of targeting movements
Term
Intention Tremor
Definition
Constant overshooting and undershooting a target.
Term
Dysdiadochokinesia
Definition
The inability to perform a series of rapid alternating movements
Term
Dysarthria
Definition
Slurred speech
Term
Mydriasis
Definition
Excessive dilation of the pupil.
Term
Miosis
Definition
Constriction of the pupil
Term
Bradycardia
Definition
Lowering of heart rate
Term
Tachycardia
Definition
Increased heart rate
Term
Apraxia
Definition
Difficulty in executing complex movements.
Term
Sensorimotor Loop
Definition
From frontal/parietal cortex to the putamen; operates in fine motor control
Term
Associative Loop
Definition
From prefrontal cortex and other association areas to the caudate; operates in cognitive function
Term
Limbic Loop
Definition
From the frontal/temporal lobes to the ventral striatum (nucleus accumbens); contributes to motivated behaviors
Term
Trinucleotide Repeats
Definition
Series of CAGs in DNA that leads to Huntingtin overproduction
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