Lecture notes

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Published on 29 Jan 2011
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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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Document Summary

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 cue most trials, target appears opposite of gaze cue so subject must adopt strategy that"s advantageous. There is enough time to inhibit the gaze cue, therefore attention was at the place it should be and it will override with top down. For hommel et al at 200ms there is a typical ior effect. At 600ms it 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) In the identification task, the probe appeared 80% of the time. Testing if the arrow can override the top down spatial bias.

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