Common or redundant neural circuits for duration processing across audition and touch

John S. Butler, Sophie Molholm, Ian C. Fiebelkorn, Manuel R. Mercier, Theodore H. Schwartz, John J. Foxe

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Certain features of objects or events can be represented by more than a single sensory system, such as roughness of a surface (sight, sound, and touch), the location of a speaker (audition and sight), and the rhythm or duration of an event (by all three major sensory systems). Thus, these properties can be said to be sensory-independent or amodal.Akey question is whethercommonmultisensory cortical regions process these amodal features, or does each sensory system contain its own specialized region(s) for processing common features? We tackled this issue by investigating simple duration-detection mechanisms across audition and touch; these systems were chosen because fine duration discriminations are possible in both. The mismatch negativity (MMN) component of the human event-related potential provides a sensitive metric of duration processing and has been elicited independently during both auditory and somatosensory investigations. Employing high-density electroencephalographic recordings in conjunction with intracranial subdural recordings, we asked whether fine duration discriminations, represented by the MMN, were generated in the same cortical regions regardless of the sensory modality being probed. Scalp recordings pointed to statistically distinct MMN topographies across senses, implying differential underlying cortical generator configurations. Intracranial recordings confirmed these noninvasive findings, showing generators of the auditory MMN along the superior temporal gyrus with no evidence of a somatosensory MMN in this region, whereas a robust somatosensory MMN was recorded from postcentral gyrus in the absence of an auditory MMN. The current data clearly argue against acommoncircuitry account for amodal duration processing.

Original languageEnglish (US)
Pages (from-to)3400-3406
Number of pages7
JournalJournal of Neuroscience
Volume31
Issue number9
DOIs
StatePublished - Mar 2 2011

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Touch
Hearing
Somatosensory Cortex
Temporal Lobe
Scalp
Evoked Potentials

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Common or redundant neural circuits for duration processing across audition and touch. / Butler, John S.; Molholm, Sophie; Fiebelkorn, Ian C.; Mercier, Manuel R.; Schwartz, Theodore H.; Foxe, John J.

In: Journal of Neuroscience, Vol. 31, No. 9, 02.03.2011, p. 3400-3406.

Research output: Contribution to journalArticle

Butler, John S. ; Molholm, Sophie ; Fiebelkorn, Ian C. ; Mercier, Manuel R. ; Schwartz, Theodore H. ; Foxe, John J. / Common or redundant neural circuits for duration processing across audition and touch. In: Journal of Neuroscience. 2011 ; Vol. 31, No. 9. pp. 3400-3406.
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