A direct comparison of exogenous and endogenous inhibition of return and selective attention mechanisms in the somatosensory system

Somatosensory & Motor Research
Jason C CohenRonald T Verrillo

Abstract

The interaction of excitation and inhibition in responses due to attentional mechanisms in the visual system has been investigated. The studies reported herein use the tactile system of humans to test a specific hypothesis about the processes of attention that have never been directly addressed. Both exogenous and endogenous Inhibition of Return (IOR) reaction-time paradigms with a 100 Hz, 35 microm of peak displacement amplitude were used. In these experiments multiple Stimulus Onset Asynchronies were tested which made it difficult for subjects to learn timing patterns. We tested whether a detection time to a target which is to be attended to is a composite of at least two underlying mechanisms. These mechanisms were explored using exogenous and endogenous IOR experiments. It is hypothesized that these mechanisms work in a push-pull fashion: one deploying attention when new events occur, and the other withdrawing attention ("Disengagement") after it has been deployed. Based on the results, a new hypothesis is proposed stating that one form of attention (selective attention) competes with IOR in determining the time taken to detect a target in the tactile system.

References

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Citations

Jul 7, 2009·Annual Review of Psychology·Mark Hollins
Dec 7, 2011·Biological Psychology·Alexander Jones, Bettina Forster
Jul 22, 2014·The European Journal of Neuroscience·Alexander Jones, Bettina Forster
Apr 18, 2013·Somatosensory & Motor Research·Alexander Jones, Bettina Forster
Jan 24, 2013·Neuropsychologia·Alexander Jones, Bettina Forster
Jul 30, 2014·Frontiers in Human Neuroscience·Meike A SchweisfurthStefan Treue
Oct 5, 2016·Biochemical and Biophysical Research Communications·Qinghua YuanYitong Ma
Jun 24, 2016·Journal of Neurophysiology·Manuel Gomez-RamirezErnst Niebur
Dec 13, 2006·Experimental Brain Research·Ana B ChicaCharles Spence
Jun 15, 2011·Psychological Research·Germán Gálvez-GarcíaH Chris Dijkerman
Apr 3, 2020·Journal of Neurophysiology·Elizabeth J HalfenJeffrey M Yau

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