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Lecture

Lecture notes


Department
Psychology
Course Code
PSY475H1
Professor
West

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PSY475 Nov 22, 2010
Gaze and Arrow Cues
-Gaze and arrow cues is a top down response
-Three levels of SOA (100, 200, 700ms)long SOA = IOR (tension was in spatial location but left
after a pause)
-Gaze cues behave differently than exogenous cues
-Counter predictive gaze cuemost trials, target appears opposite of gaze cue so subject must
adopt strategy thats advantageous
-There is enough time to inhibit the gaze cue, therefore attention was at the place it should be and
it will overr ide wit h top down
-Can gaze cues produce IOR?reoriented and slower for valid trials
-For Hommel et al at 200ms there is a typical IOR effect
-At 600msit is enough for IOR because attention is kept in area
-The arrow cue is compatible with where target appears, therefore decrease in IOR (arrow cue is
irrelevant)
-Arrow cues are processed automatically (reflexive)
- In the identification task, the probe appeared 80% of the time
-Testing if the arrow can over r ide the top down spatial bias
-Arrows are reflexive, words are not
-Arrow cues can over r ide attention
-Word cues require more time and attention – has the ability to affect shift but not reflexive
because it needs to access semantics
- Interaction between working memor y and chosen cue
-Colour is always in working memor y
-Only sometimes target will appear in that location, other times target is at a place where
arrow colour is not in the working memory
- If ar row colour is in working memory, then it is a cue benefit, and the reaction time is
slower because there is facilit ation from the colour match
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