Quiz Three (Test Three) Flashcards
What is the role of the mossy fibers within the cerebellum
Input; Excitatory
Which of the following is not a hypothesized function of the cerebellum: A)Assembling motor synergies B)Timing of Actions C)Making conscious decisions D)Posture and Balance E)Coordination
C)Making Conscious Decisions
Which diagnostic test involves stimulating a peripheral nerve and tracing the signal as it travels through the CNS?
Evoked Potentials
Which diagnostic test twill result in the best picture of neural tissue (high spatial resolution), but is expensive and requires a high degree of patient cooperation.
MRI
What part of the cerebral cortex would be active when a person constructs a movement from internal motor memory
Supplementary Motor Memory
What part of the cerebral cortex would be active during the execution of a voluntary movement
Primary motor cortex
Which of the following is not one of the structures from which ascending information comes into the cerebral cortex from? A) Spinal Cord B) Basil Ganglia C) Red nucleus D) Cerebellum E) Information comes into the cortex from all of the above,
C) Red Nucleus
Descending information from the cerebral cortex primarily goes to which structures?
Spinal Cord, Basil Ganglia, Red Nucleus, Cerebellum
If you stimulate one cortical cell, and activate different groups of motor units that results in different movements, which principle have you demonstrated?
Divergence
What is the ratio of inputs to outputs in the cerebellum?
40:1
What is the role of the Purkinjie cells within the cerebellum
Output; Inhibitory
Which descending pathway innervates the nuclei of the cranial nerves?
Corticobulbar
What par of the brain’s primary function is integrating motor and sensory information?
Thalamus
