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- W1461865160 abstract "Orienting processing resources towards a peripheral region of adisplay, by means of an exogenous cue, produces a biphasic effect onsubsequent target detection. Intially response latency is facilitated, butincreasing the SOA to 300 ms or greater results in slower detection, and this isknown as the inhibition of return (IOR) effect. Initially this inhibitory effectwas thought to bias attention against returning to a previously attendedlocation but subsequent work demonstrated that it can also be associated withan object when motion is utilised to dissociate the two effects. This thesis reexaminedthe generality and utility of the object-based IOR effect.Chapter 3 demonstrated that presenting an (apparent) object at the cuetargetlocation is sufficient to trigger the object-based IOR effect. Theobservation that inhibition can spread across the surface of an object (Chapter4) confirmed that pure object-based IOR is observed in static displays.Together these chapters provided a complete dissociation of the twoindependent IOR effects and suggests that they operate additively in thetypical IOR procedure.Chapter 5 demonstrated that the separate inhibitory mechanisms havecharacteristic boundary conditions. Orienting attention within-objectsabolishes the location-based IOR effect, but does not effect the object-basedeffect. In sharp contrast, increasing object salience modulates the object-basedeffect, but has no effect on location-based inhibition.Finally, there was no evidence of a retinotectal pathway involvement inthe location-based IOR effect under monocular conditions. Rather, botheffects appear to be generated by cortical regions, with an exclusively leftvisual field bias for the object-based IOR effect.It was concluded that object-based IOR effects generalise to staticprocedures, which seriously questions the interpretation that IOR effectsobserved in static displays are mediated purely by a spatial frame ofreference. This conclusion may generalise to all static precueing procedures. The boundary conditions of the object-based IOR effect are consistent with amechanism that serves to guide efficient visual processing." @default.
- W1461865160 created "2016-06-24" @default.
- W1461865160 creator A5070179913 @default.
- W1461865160 date "1998-01-01" @default.
- W1461865160 modified "2023-09-24" @default.
- W1461865160 title "Object- and location-based forms of representation in inhibition of return" @default.
- W1461865160 hasPublicationYear "1998" @default.
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