Exam 7: The Control of Action

Franz and colleagues (1996)asked a patient who had had his corpus callosum surgically severed to draw figures like the ones here,each simultaneously with a different hand. Compared to neurologically intact control participants,they found that this patient

Loss of blood flow in the ________ is the most common cause of hemiplegia.

Hemiplegia is the

Keele's work with people with Parkinson's disease suggests that they may have difficulties in which of the following cognitive operations?

Compare and contrast the neurological disorders of Parkinson's disease and Huntington's disease.How are they similar,and how do they differ?

After suffering a focal brain injury,a patient has great difficulty in pantomiming particular motor actions such as turning a key in a lock.Because other problems like hemiplegia,muscle weakness,sensory deficits,and lack of motivation have been ruled out,your diagnosis would be

The concept of endpoint control refers to the observation that voluntary muscle events

Which of the following statements best describes the population vector associated with a reaching movement from left to right?

The loss of sensory feedback from an effector

In performing a sequence of complex actions,such as playing the piano,each movement is planned primarily in relation to the immediately preceding and subsequent movements.

The two general subtypes of apraxia are

A patient has damage to the basal ganglia,particularly within the striatum,and demonstrates both chorea and hyperkinesia.What is your diagnosis?

Which of the following is NOT an effector?

The term embodied cognition refers to the idea that our conceptual knowledge is grounded in knowledge about the body and movement.

When you first learn how to execute the complex motor sequence that comprises a slam dunk in basketball,a circuit including the ________ is active.After much practice,once you have learned the sequence well,a second circuit involving the ________ is active.

Studies of deafferentation and its effect on movement control in humans and other species demonstrate that

Which of the following types of motor behavior probably relies the most on the function of a central pattern generator?

Which of the following would demonstrate the finding that some aspects of motor learning are independent of the specific effectors used to perform an action?

Describe the neurological condition apraxia.How does this disorder inform our understanding of how complex movements are represented in the brain?

What disorder is characterized by a loss of dopaminergic fibers in the substantia nigra,which results in deficits in initiating voluntary movements,bradykinesia,and the progressive emergence of a resting tremor?