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Weber's law in decision making: integrating behavioral data in humans with a neurophysiological model

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dc.contributor.author Deco, Gustavo
dc.contributor.author Scarano, Leandro
dc.contributor.author Soto-Faraco, Salvador, 1970-
dc.date.accessioned 2012-07-05T06:53:47Z
dc.date.available 2012-07-05T06:53:47Z
dc.date.issued 2007
dc.identifier.citation Deco G, Scarano L, Soto-Faraco S. Weber's Law in Decision Making: Integrating Behavioral Data in Humans with a Neurophysiological Model. J. Neurosci. 2007; 27(42): 11192-00. DOI: 10.1523/​JNEUROSCI.1072-07.2007
dc.identifier.issn 0270-6474
dc.identifier.uri http://hdl.handle.net/10230/16661
dc.description.abstract Recent single-cell studies in monkeys (Romo et al., 2004) show that the activity of neurons in the ventral premotor cortex covaries with the animal's decisions in a perceptual comparison task regarding the frequency of vibrotactile events. The firing rate response of these neurons was dependent only on the frequency differences between the two applied vibrations, the sign of that difference being the determining factor for correct task performance. We present a biophysically realistic neurodynamical model that can account for the most relevant characteristics of this decision-making-related neural activity. One of the nontrivial predictions of this model is that Weber's law will underlie the perceptual discrimination behavior. We confirmed this prediction in behavioral tests of vibrotactile discrimination in humans and propose a computational explanation of perceptual discrimination that accounts naturally for the emergence of Weber's law. We conclude that the neurodynamical mechanisms and computational principles underlying the decision-making processes in this perceptual discrimination task are consistent with a fluctuation-driven scenario in a multistable regime.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Society for Neuroscience
dc.relation.ispartof J. Neurosci. 2007; 27(42): 11192-00
dc.rights (c) 2007, Society for Neuroscience. The published version is available at: http://www.jneurosci.org/content/27/42/11192
dc.subject.other Xarxes neuronals (Neurobiologia)
dc.subject.other Neurones
dc.subject.other Decisió, Presa de
dc.title Weber's law in decision making: integrating behavioral data in humans with a neurophysiological model
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1523/JNEUROSCI.1072-07.2007
dc.subject.keyword Somatosensory
dc.subject.keyword Vibrotactile discrimination
dc.subject.keyword Decision making
dc.subject.keyword Weber’s law
dc.subject.keyword Multistability
dc.subject.keyword Stochastic neurodynamics
dc.subject.keyword Probabilistic behavior
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion

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