Neuroplasticity

Question 1

Define neuroplasticity

Answer 1

The ability of the brain to changes in the environment and adapt to functional demands placed on it, therefore being able to re-model. This occurs if sustained change is applied on the CNS.

Question 2

Define long term potentitation

Answer 2

The long-term enhancement of communication between two neurones resulting in the simultaneous rapid firing of the two neurones . This occurs when the post-synaptic membrane increases the amount of receptors it has so communication is enhanced. e.g. learning the piano through skill acquisition.

Question 3

Define long term depression

Answer 3

The weakening and eventual fading of a synapse between two neurones so that constructive use can be made of the communication network e.g. if you learn a skill incorrectly the synapse needs to be broken down to correctly promote the facilitation of new correct synapses.

Question 4

What is a cortical map?

Answer 4

This shows specific areas of the brain that have been identified as performing specific functions. These areas can grow via plastic changes as seen in skill acquisition and repetition.

Question 5

What is a silent synapse?

Answer 5

A synapse where a presynaptic action potential fails to evoke a detectable postsynaptic signal as there is no release of a neurotransmitter.

Question 6

What is the role of mental practice?

Answer 6

The process of thinking how to perform a particular skill - plastic changes have seen to occur as a result of mental practice in a novel task.

Question 7

Define praxis

Answer 7

The process by which a skill/theory is enacted.