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    The time course of spatial orienting elicited by central and peripheral cues: evidence from event-related brain potentials

    Eimer, Martin (2000) The time course of spatial orienting elicited by central and peripheral cues: evidence from event-related brain potentials. Biological Psychology 53 (2-3), pp. 253-258. ISSN 0301-0511.

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    Abstract

    To study differences in the time course of attentional orienting triggered by salient peripheral events and by central symbolic precues, event-related brain potentials (ERPs) were recorded in response to letter stimuli following spatially informative symbolic or peripheral precues after a cue-target interval (CTI) of either 200 or 700 ms. Stimuli at cued (attended) locations elicited an enhanced negativity relative to stimuli at uncued locations. With short CTIs, these effects started around 150 ms post-stimulus for peripheral cues. They were delayed by about 100 ms for central cues. This latency difference is assumed to reflect fast exogenous orienting elicited by peripheral, but not by central cues. Beyond 200 ms post-stimulus, attentional negativities were larger with long CTIs than with short CTIs for both cue types, presumably related to the gradual build-up of endogenous orienting triggered by spatially predictive events.

    Metadata

    Item Type: Article
    School: School of Science > Psychological Sciences
    Depositing User: Sarah Hall
    Date Deposited: 10 Dec 2019 12:15
    Last Modified: 10 Dec 2019 12:15
    URI: https://eprints.bbk.ac.uk/id/eprint/30244

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