CNS Motor Control and Motor Learning 2

Question 1

Contextual interference in motor learning refers to:

Accepted Answer

The interference created by practicing multiple skills in a random order, which enhances long-term learning

Answer

Environmental distractions that impair concentration during motor task practice

Answer

Competing motor programs stored in memory that interfere with new skill acquisition

Answer

Sensory input from the environment that disrupts the execution of motor programs

Question 2

Bernstein's 'degrees of freedom problem' in motor control refers to:

Accepted Answer

The challenge the nervous system faces in controlling the many independent joints and muscles available for movement

Answer

The inability of patients with CNS lesions to control fine motor movements

Answer

The limited range of motion available at joints affected by neurological injury

Answer

The difficulty in selecting appropriate movement strategies in complex environments

Question 3

Which augmented feedback schedule BEST promotes long-term motor learning by fostering the development of internal error detection?

Accepted Answer

Faded feedback that decreases in frequency as practice progresses

Answer

Continuous feedback provided after every practice trial

Answer

Summary feedback provided after every 10 trials

Answer

Bandwidth feedback triggered only when performance falls outside set limits

Question 4

Transfer of training in motor learning is BEST defined as:

Accepted Answer

The influence of prior practice or experience on the learning or performance of a new task

Answer

The physical handoff of patient care from one therapist to another during rehabilitation

Answer

The documentation and carry-over of skills learned during inpatient rehabilitation

Answer

The transition from supervised to independent home exercise practice

Question 5

Feedforward motor control mechanisms are BEST characterized as:

Accepted Answer

Anticipatory motor commands prepared before movement begins based on predictive internal models

Answer

Corrections made to ongoing movement based on sensory error signals

Answer

Reflex arc-mediated adjustments that stabilize posture during movement

Answer

Sensory processing that occurs after movement completion to update motor programs

Question 6

The cerebellum contributes to motor learning PRIMARILY by:

Accepted Answer

Comparing intended movements with actual movements and using error signals to update future motor programs

Answer

Generating initial motor programs in response to cortical commands via the corticospinal tract

Answer

Inhibiting unwanted movements through dopaminergic reward and punishment pathways

Answer

Initiating voluntary movement sequences through direct projections to spinal motor neurons

Question 7

Which of the following BEST represents the principle of task-specific training in neurological rehabilitation?

Accepted Answer

Practicing the actual functional task in its relevant context to drive specific neural adaptations

Answer

Breaking tasks into components and practicing each in isolation before combining them

Answer

Adapting tasks to match the patient's current capability to ensure success on every trial

Answer

Using virtual reality environments to safely simulate functional task demands