Modeling Inhibition of Return as Short-Term Depression of Early Sensory Inpu...

 

 

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Modeling Inhibition of Return as Short-Term Depression of Early Sensory Input to the Superior Colliculus

via ScienceDirect Publication: Vision Research on 2/25/11

Publication year: 2011
Source: Vision Research, In Press, Accepted Manuscript, Available online 24 February 2011
J., Satel , Z., Wang , T.P., Trappenberg , R.M., Klein
Inhibition of return (IOR) is an orienting phenomenon characterized by slower behavioral responses to spatially cued, relative to uncued targets, when the cue-target onset asynchronies (CTOAs) are long enough that cue-elicited attentional capture has dispersed. Here, we implement a short-term depression (STD) account of IOR within a neuroscientifically based dynamic neural field model (DNF) of the superior colliculus (SC). In addition to the prototypical findings in the cue-target paradigm (ie., the biphasic pattern of behavioral enhancement at short CTOAs and behavioral costs at long CTOAs), a variety of findings in the literature are generated with this model, including IOR in...
 Research highlights: ► Prototypical findings in the cue-target experimental paradigm (ie., the biphasic pattern of behavioral enhancement at short cue-target onset asynchronies (CTOAs) and behavioral costs at long CTOAs) are replicated with the incorporation of short-term depression (STD) of targetelicited early sensory inputs to a dynamic neural field (DNF) model of the superior colliculus (SC). ► Additional findings, including IOR in saccadic averaging and the co-existence of IOR and endogenous orienting at the same location are also reproduced. ► Findings that cannot be accommodated by this model could be accounted for by incorporating cortical contributions.

 

 

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