Cited by 162Tactile and Sensory InteractionsVisual perception and processing mechanismsMultisensory perception and integration

The representation of stimulus orientation in the early stages of somatosensory processing

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Bensmaia, Sliman J., Denchev, Peter V., Dammann, J. Francis, Craig, James C., Hsiao, Steven S.·2008·The Journal of Neuroscience

Abstract

At an early stage of processing, a stimulus is represented as a set of contours. In the representation of form, a critical feature of these local contours is their orientation. In the present study, we investigate the representation of orientation at the somatosensory periphery and in primary somatosensory cortex. We record the responses of mechanoreceptive afferents and of neurons in areas 3b and 1 to oriented bars and edges using a variety of stimulus conditions. We find that orientation is not explicitly represented in the responses of single afferents, but a large proportion of orientation detectors (approximately 50%) can be found in areas 3b and 1. Many neurons in both areas exhibit orientation tuning that is preserved across modes of stimulus presentation (scanned vs indented) and is relatively insensitive to other stimulus parameters, such as amplitude and speed, and to the nature of the stimulus, bar or edge. Orientation-selective neurons tend to be more SA (slowly adapting)-like than RA (rapidly adapting)-like, and the strength of the orientation signal is strongest during the sustained portion of the response to a statically indented bar. The most orientation-selective neurons in SI are comparable in sensitivity with that measured in humans. Finally, responses of SI neurons to bars and edges can be modeled with a high degree of accuracy using Gaussian or Gabor filters. The similarity in the representations of orientation in the visual and somatosensory systems suggests that analogous neural mechanisms mediate early visual and tactile form processing.

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Crossref · 10.1523/jneurosci.4162-07.2008

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  • Visual and cutaneous representations of shape are analogous in the periphery and in cortex, both involving decomposition of shape into oriented contours and extraction of increasingly complex features such as curvature.

    “Not only are the visual and cutaneous representations of shape analogous in the periphery, they are also analogous in cortex, both involving the decomposition of shape into a set of oriented contours (Bensmaia et al., 2008), then extracting increasingly complex stimulus features, such as curvature (Yau et al., 2013;2009).”

    From Biomimetic approaches to bionic touch through a peripheral nerve interface (2015) · cites this paper as Bensmaia et al., 2008

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Research works printed but not linked: 1

  1. Vallbo ÅB, Johansson RS (1978) The tactile sensory innervation of the gla- brous skin of the human hand. In: Actice touch. The mechanism of rec- ognition of objects by manipulation: a multi-disciplinary approach (Gor- don G, ed), pp 29 -54. Oxford: Pergamon.

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Authors
Bensmaia, S. J., Denchev, P. V., Dammann, J. F., Craig, J. C., & Hsiao, S. S.
Affiliations
  • Johns Hopkins University (US)
  • Indiana University Bloomington (US)
Venue
The Journal of Neuroscience
Published
2008-01-16
Volume
28
Issue
3
Pages
776-786
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2119454234
Cited by
162
References
29
Citations by year
2026: 7 · 2025: 5 · 2024: 4 · 2023: 5 · 2022: 13 · 2021: 9 · 2020: 9 · 2019: 15 · 2018: 11 · 2017: 9 · 2016: 8 · 2015: 14 · 2014: 16 · 2013: 12 · 2012: 8
FWCI
2.93
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute on Deafness and Other Communication Disorders (R01DC000095, DC-00095)
  • National Institute of Neurological Disorders and Stroke (R01NS034086, NS 34086, NS-18787, R01NS018787)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
Keywords
orientation representation, somatosensory processing, primary somatosensory cortex, area 3b, area 1, orientation tuning, slowly adapting afferents, rapidly adapting afferents, Gabor filters, contour orientation, single neuron responses
MeSH terms
Action Potentials, Afferent Pathways, Animals, Brain Mapping, Form Perception, General Adaptation Syndrome, Macaca mulatta, Models, Neurological, Neurons, Orientation, Physical Stimulation, Psychophysics, Somatosensory Cortex, Time Factors, Touch, Normal Distribution

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