Topic 7

Question 1

Preprogrammed Responses

Answer 1

Series of muscle contractions (response) prepared in advance by the CNS and released by a specific stimulus

Longer latency than reflex, shorter latency than voluntary responses

AKA: long latency stretch reflex, corrective postural reactions

Question 2

Spinal Reflex (M1)

Answer 2

Monosynaptic reflex

Only in SC

25-50 ms

Question 3

Transcortical Reflex (M2)

Answer 3

“Long latency”, preprogrammed type response

50-100 ms

Some cortical areas involved but does not involve all stages of info processing

Question 4

Cortical response

Answer 4

Voluntary

100+ ms

Will be based on any other instructions to individual is provided with

Question 5

3 problems associated with motor programming theory:

Answer 5

1. DoF problem
   - maybe directionally tuned cells then?
2. Reaching task & GMP
   - maybe it’s the goal that’s specifically planned rather than series of specific muscle contractions
3. Reaching task and M2 reflex
   - shows that there is flexible use of M2 reflex which therefore goes against motor program theory bc it rejects the use of reflexes