Matt
Level 3 Valued Member
I know everyone can read it for themselves, but the article Brett initially posted talks about this too. I was going to mention it yesterday but couldn't read some of the references. Yet :
In some circumstances, a combination of both feedforward and feedback control exists, such as during the maintenance of postural control.6 Additionally, consider the situation in which a subject watches a tester trigger a device that induces a joint perturbation. Many subjects will naturally ‘‘tense up’’ when they see the tester beginning to push the trigger before the perturbation. Whether the muscle activation before the perturbation reaching the joint is the result of feedforward or feedback control remains controversial. For this reason, the term feedforward control has been recommended to describe actions occurring upon the identification of the beginning, as well as the effects, of an impending event or stimulus.4,5,7"
Brandon and Brett have put that in their own words too.
I was thinking of a similar thing in an earlier post when my response to my anticipation of an event was much more than the direct stimulus (my eye reading a number on the screen).
To be fair, I can also see how Scientist can claim they are learnt motor patterns, not reflexive (where a reflexive response must always at all times be a response from a nerve being stimulated, not anticipating the stimulation)? A baby or an ignorant newbie learns these responses from direct stimulation then anticipates. YET a baby has a direct stimulus (gravity) from day 1 and so straight away is learning to "control" it's huge range of mobility (ie. stabilise reflexively). This is probably talked about somewhere in the paper Brett referenced or it's followup.
Something that surprised me - these concepts and terms are over 100years old, involving a Noble Laureate. The paper Brett referenced outline some changes in terminology today, yet you'd think the discussion we're having has been had over and over already?
In some circumstances, a combination of both feedforward and feedback control exists, such as during the maintenance of postural control.6 Additionally, consider the situation in which a subject watches a tester trigger a device that induces a joint perturbation. Many subjects will naturally ‘‘tense up’’ when they see the tester beginning to push the trigger before the perturbation. Whether the muscle activation before the perturbation reaching the joint is the result of feedforward or feedback control remains controversial. For this reason, the term feedforward control has been recommended to describe actions occurring upon the identification of the beginning, as well as the effects, of an impending event or stimulus.4,5,7"
Brandon and Brett have put that in their own words too.
I was thinking of a similar thing in an earlier post when my response to my anticipation of an event was much more than the direct stimulus (my eye reading a number on the screen).
To be fair, I can also see how Scientist can claim they are learnt motor patterns, not reflexive (where a reflexive response must always at all times be a response from a nerve being stimulated, not anticipating the stimulation)? A baby or an ignorant newbie learns these responses from direct stimulation then anticipates. YET a baby has a direct stimulus (gravity) from day 1 and so straight away is learning to "control" it's huge range of mobility (ie. stabilise reflexively). This is probably talked about somewhere in the paper Brett referenced or it's followup.
Something that surprised me - these concepts and terms are over 100years old, involving a Noble Laureate. The paper Brett referenced outline some changes in terminology today, yet you'd think the discussion we're having has been had over and over already?