Understanding Movement Preparation Chapter 2

Perception Indirect Perception Symbolic representation Series of mental processes Comparison with existing memory stores Associated with information processing model.

Information Processing Model   Input – Perception - Decision Making – Execution - Output - Feedback

Perception Cont. Direct Perception Affordances Perception Action

Reaction Time (RT) Interval of time between the moment that a stimulus is presented to when a response is initiated. Indicative of the amount of time needed to prepare a response. Influenced by several factors.

Number of Response Choices Simple vs. choice RT Hick’s Law Relationship between the number of movement choices and the time needed to prepare a response The higher the degree of uncertainty in a given situation, the longer the time needed to decide which response to make

Predicted Relationship Between Number of Stimulus-Response Choices and RT

Components of Response Time  

Anticipation Event anticipation Temporal anticipation Precues Predicting what event will happen Temporal anticipation Predicting when an event will happen Precues Cost/benefit tradeoff

Psychological Refractory Period (PRP)

Stimulus Response Compatibility The extent to which a stimulus and its required response are naturally related

Attention Bottleneck theory Limited attentional capacity Things to consider: Environmental and task complexity Skill level Number of cues Selective attention

Attentional Focus

Arousal  

Cue Utilization Hypothesis