The effect of imagination on stimulation

The functional specificity of Efference copies in speech processing

Xing Tian, David Poeppel

Research output: Contribution to journalArticle

Abstract

The computational role of efference copies is widely appreciated in action and perception research, but their properties for speech processing remain murky. We tested the functional specificity of auditory efference copies using magneto-encephalography recordings in an unconventional pairing: We used a classical cognitive manipulation (mental imagery-to elicit internal simulation and estimation) with a well-established experimental paradigm (one shot repetition-to assess neuronal specificity). Participants performed tasks that differentially implicated internal prediction of sensory consequences (overt speaking, imagined speaking, and imagined hearing) and their modulatory effects on the perception of an auditory (syllable) probe were assessed. Remarkably, the neural responses to overt syllable probes vary systematically, both in terms of directionality (suppression, enhancement) and temporal dynamics (early, late), as a function of the preceding covert mental imagery adaptor. We show, in the context of a dual-pathway model, that internal simulation shapes perception in a context-dependent manner.

Original languageEnglish (US)
Pages (from-to)1020-1036
Number of pages17
JournalJournal of Cognitive Neuroscience
Volume25
Issue number7
DOIs
StatePublished - Jun 2013

Fingerprint

Imagination
Imagery (Psychotherapy)
Auditory Perception
speaking
Health Services Research
Hearing
simulation
suppression
manipulation
recording
paradigm
imagination
Stimulation
Specificity
Speech Processing
Efference
Mental Imagery
Simulation

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Language and Linguistics
  • Linguistics and Language

Cite this

The effect of imagination on stimulation : The functional specificity of Efference copies in speech processing. / Tian, Xing; Poeppel, David.

In: Journal of Cognitive Neuroscience, Vol. 25, No. 7, 06.2013, p. 1020-1036.

Research output: Contribution to journalArticle

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