Perception/Action

Perception/Action Cycle:

"We must perceive in order to move, but we must also move in order to perceive". (Gibson, 1979)

Action: knowledge and understanding of how our bodies move and fit into the environment

Abilities gained using optic flow information:

1. Heading -

 

 

 

 

 

 

 

2. Balance -

 

 

 

 

 

 

 

3. Affordances -

 

 

 

e.g.

 

 

 

 

 

• judging affordances help us guide our actions:

 

 

 

• judging slant of a slope

 

 

based on:

1)

 

 

2)

 

 

 

•  

 

 

e.g. climbing a stair with one step

 

 

e.g. judging steepness of stairs

 

• affordances not necessarily constant for a person

 

 

e.g. hill climbing study-

 

 

 

 

4. Time to contact -

 

 

• information for time to contact:

 

 

 

 

e.g. diving gannets:

 

 

 

 

Learning how our actions fit into the environment:

Calibration:

 

 

 

e.g. if switch correspondence between vision and action we will adjust