110104 Goal Evaluation of Segmentation Algorithms for Traffic Sign Recognition
110104 Task switching review slides
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Transcript of 110104 Task switching review slides
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task switchingR e v i e w
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abstract
‘Switch cost’ is reduced by preparation
Carry-over
Reconfiguration
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utilisation behaviour
Grabbing objects in view and starting the ‘appropriate’ behaviour at an 'inappropriate' time.
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early research
Prepared Reflex: automaticity and control in S-R translation
Ach: Overlearnt responses competing with the acquisition of novel S-R mapping.
Jersild - Task-switching: repeating/ alternating
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task switching paradigms
Jersild’s method
Alternating-runs paradigm - task alternates every N trials, where N is constant and predictable
Prespecified task sequence (e.g. colour-shape -colour )
Task-cueing paradigm, task is unpredictable, task cue appears either with or before S
Intermittent-instruction paradigm, interrupted by an instruction
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basic phinomena
Switch cost(task-repetition benefit)
Preparation effect
Residual cost
Mixing cost
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Predictable and unpredictabletask switching
odd/even, high/low
cued by colour/ by shape
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preparation effect
residual cost
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To classify digit(odd/even) or letter(consonant/vowel)
preparation effectresidual cost
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sources of the switch cost
Time taken by control operations - TSR
Transient task-set inertia
Associative retrieval
All of the above?
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brain correlates of task switching
Medial and lateral regions of the prefrontal cortex
Parietal lobes
Cerebellum
Subcortical regions
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issues for further research
Problems with preparation effect
The role of language
Puzzling observations