Weber's law in decision making: integrating behavioral data in humans with a neurophysiological model
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- dc.contributor.author Deco, Gustavoca
- dc.contributor.author Scarano, Leandroca
- dc.contributor.author Soto-Faraco, Salvador, 1970-ca
- dc.date.accessioned 2012-07-05T06:53:47Z
- dc.date.available 2012-07-05T06:53:47Z
- dc.date.issued 2007ca
- 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/pdfca
- 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.1072-07.2007ca
- dc.identifier.doi http://dx.doi.org/10.1523/JNEUROSCI.1072-07.2007
- dc.identifier.issn 0270-6474ca
- dc.identifier.uri http://hdl.handle.net/10230/16661
- dc.language.iso engca
- dc.publisher Society for Neuroscienceca
- dc.relation.ispartof J. Neurosci. 2007;27(42):11192-00
- dc.rights © 2007, Society for Neuroscience. The published version is available at: http://www.jneurosci.org/content/27/42/11192ca
- dc.rights.accessRights info:eu-repo/semantics/openAccess
- 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.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 modelca
- dc.type info:eu-repo/semantics/articleca
- dc.type.version info:eu-repo/semantics/publishedVersion