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01209 am a22001333u 4500 |
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18587 |
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|a Shih, Shui-I
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|a Sperling, George
|e author
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|a Measuring and modelling the trajectories of visual spatial attention
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|c 2002-04.
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|z Get fulltext
|u https://eprints.soton.ac.uk/18587/1/18587.pdf
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|a n a novel choice attention-gating paradigm, observers monitor a stream of 3x3 letter arrays until a tonal cue directs them to report 1 row. Analyses of the particular arrays from which reported letters are chosen and of the joint probabilities of reporting pairs of letters are used to derive a theory of attention dynamics. An attention window opens 0.15 s following a cue to attend to a location, remains open (minimally) 0.2 s, and admits information simultaneously from all the newly attended locations. The window dynamics are independent of the distance moved. The theory accounts for about 90% of the variance from the over 400 data points obtained from each of the observers in the 3 experiments reported here. With minor elaborations, it applies to all the principal paradigms used to study the dynamics of visual spatial attention.
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