Chapter 7.2: Brain Mechanisms of Movement Flashcards
What is the route from the motor cortex to the muscles?
Axons from the motor cortex go the brainstem and spinal cord, which have axons to the muscles
A half-second stimulation in the motor cortex produces what kind of result?
Concentration of whatever muscles are necessary to produce a particular outcome
When a movement occurs, which of the following brain areas is the last one to reach its peak of activity?
The primary motor cortex
What does the anti sac Cade task measure?
The ability to inhibit a movement
Before we conclude that mirror neurons help people imitate, which of the following should research demonstrate?
Mirror neurons develop their properties before children start to imitate
What does the medical corticospinal tract control?
Bilateral movements of the trunk of the body
What does the finger-to-nose test measure?
Possible dysfunction of the cerebellum
The cerebellum is most important for which aspect of movement?
Timing
How are the parallel fibers arranged relative to the Purkinje cells?
They are perpendicular to them
Which of the following characterizes the movements that depend heavily on the basal ganglia?
Self-initiated, and generally slower than responses that a stimulus triggers.
In what way, if at all, does basal ganglia activity relate to motivation?
The basal ganglia increases vigor of response depending on expected reward value
What kind of learning depends most heavily on the basal ganglia?
Motor habits that are difficult to describe in words
According to Libet’s study, what is the order of events in a voluntary movement?
Activity begins in the premotor cortex, and a bit later, people are aware of forming an intention, and finally the movement starts
