Action Preperation Flashcards
Reaction time
Interval between stimulus and initiation of muscle response (movement)
E.g. time between gun goes off and first initiation of movement
2 reaction time components
- Premotor time
- Motor time
Pre-motor time
Indicates perceptual and cognitive decision making activity (neural aspect)
- before any muscle activity
Motor time
Time between electromyography activity and the movement we see
Info processing model of premotor activities
Perception (stimulus identification) -> cognition (response selection) ->action planning (response programming)
What does response time include
Reaction time and movement time
Movement time
Interval of time between start and end of movement
What are RT and MT
Independent measures
Fast reaction does not mean fast movement in many situations
When does muscle activity occur
During motor time and movement time
How do we know how much time we spend in each phase
Donders subtractive method
Donders subtractive method
Measure duration of each stage of info processing using 3 different conditions and 4 stages in RT paradigm
4 parts of RT
Cue to move, start of muscle activity, movement start, movement end
3 conditions of Donders subtractive method
- Simple RT (task a)
- Choice RT (task b)
- Discrimination RT (task c)
Simple RT
One signal, one response
E.g. stop sign
Choice RT
More than one signal, each with own response
E.g. traffic light
Discrimination RT
More than one signal, one response
Go or no go
4 stages in RT paradigm of Donders subtractive method
- Stimulus detection
- Stimulus recognition
- Response selection
- Response programming
Stimulus detection
Determining if sitmulus has occurred
Stimulus recognition
Identify what stimulus it was
Response selection
Choosing correct response
Response programming
Generating motor commands to make movement happen
What does stimulus detection and stimulus identification of the Donders subtractive method line up with in the info processing model
Perception
What does response selection line up to in info processing model
Cognition
What does response programming from Donders subtractive method line up with in info processing model
Action planning
What parts of Donders subtractive method are used in choice RT
Stimulus detection - stimulus recognition - response selection - response program
What parts of Donders subtractive method are used in go or no go
Stimulus detection - stimulus recognition - response program
What parts of Donders subtractive method are used in simple RT
Stimulus detection - response program
Which type of RT has more chance of error
Discrimination
6 situation and task characteristics that affect reaction time
- # of choices
- Predictability of choices
- Probability of pre cue correctness
- Stimulus-response compatibility
- Regulatory of foreperiod
- Order of stimulus presentation