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Perceived Frequency of Aperiodic Vibrotactile Stimuli Depends on Temporal Encoding
UNSW Sydney, Australia; Neurosci Res Australia, Australia.
UNSW Sydney, Australia; Neurosci Res Australia, Australia.
UNSW Sydney, Australia; Neurosci Res Australia, Australia.
Linköpings universitet, Medicinska fakulteten. Neurosci Res Australia, Australia.
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2018 (Engelska)Ingår i: HAPTICS: SCIENCE, TECHNOLOGY, AND APPLICATIONS, PT I, SPRINGER INTERNATIONAL PUBLISHING AG , 2018, Vol. 10893, s. 199-208Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Mechanical transients and events arising during dexterous manipulation are detected by tactile afferents. Naturally occurring vibrotactile stimuli have a mix of frequencies, which creates complex afferent discharge patterns. Psychophysical correlates of these complex discharge patterns could be useful tools to gain greater insights into tactile coding and the principles of signal processing in the nervous system. In a previous study, we discovered that frequency perception of periodic bursting stimuli depended on the duration of the silent gap between spike bursts. Here, we investigated the perceived frequency of aperiodic vibrotactile stimuli. We found that perceived frequency was lower than the mean discharge rate of the afferents. This supports a hypothesis stemming from our previous work, that within spike trains consisting of mixed length inter-spike intervals, the contribution of a given interval to perceived frequency is weighted by its length. Thus, the present study reveals that frequency perception of both periodic and aperiodic stimuli is encoded by sophisticated processing of individual inter-spike intervals, rather than based on detection of periodicity or spike counting.

Ort, förlag, år, upplaga, sidor
SPRINGER INTERNATIONAL PUBLISHING AG , 2018. Vol. 10893, s. 199-208
Serie
Lecture Notes in Computer Science, ISSN 0302-9743
Nyckelord [en]
Tactile; Vibration; Frequency; Aperiodic; Psychophysics
Nationell ämneskategori
Signalbehandling
Identifikatorer
URN: urn:nbn:se:liu:diva-154761DOI: 10.1007/978-3-319-93445-7_18ISI: 000458559900018ISBN: 978-3-319-93445-7 (tryckt)ISBN: 978-3-319-93444-0 (tryckt)OAI: oai:DiVA.org:liu-154761DiVA, id: diva2:1291735
Konferens
11th International Conference on Haptics - Science, Technology, and Applications (EuroHaptics)
Anmärkning

Funding Agencies|NHMRC Project Grant [APP1028284]; Australian Government Research Training Program Scholarship

Tillgänglig från: 2019-02-26 Skapad: 2019-02-26 Senast uppdaterad: 2019-02-26

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Andersen, JosefinNilsson, Sara
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