Lecture 9

Question 1

Anticipatory Postural Adjustments

Answer 1

responses that precede movements to offset the predicted destabilizing effect of the movement

Question 2

T/F Anticipatory Postural Responses do not precede voluntary tasks that require COM to be accelerated in a particular direction to successfully complete the task

Answer 2

False, they do precede voluntary tasks

Question 3

When do APAs occur

Answer 3

~100 ms prior to onset of voluntary movement

Question 4

Postural set

Answer 4

APAs that are adapted to suit specific contexts and intentions

Question 5

Order of APA

Answer 5

COP shifts in opposite direction so that COM can have a negative response and accelerate opposite to COP
EG. COP moves backward before going on toes so that COM can shift forward to allow movement to occur

Question 6

Is there APA when support is provided

Answer 6

no

Question 7

Startle response

Answer 7

Nonspecific flexor reflex or response

Question 8

StartReact effect

Answer 8

if someone preparing movement, coupled with startling response
all elements of prepared response are triggered by startling cue happen before if one was t do it voluntarily

Question 9

what does the startreact effect tell you

Answer 9

if motor preparation occured
what aspects of movement can be prepared