NDLI: Mental imagery of speech: linking motor and perceptual systems through internal simulation and estimation

Content Provider	PubMed Central
Author	Tian, Xing Poeppel, David
Copyright Year	2012
Abstract	The neural basis of mental imagery has been investigated by localizing the underlying neural networks, mostly in motor and perceptual systems, separately. However, how modality-specific representations are top-down induced and how the action and perception systems interact in the context of mental imagery is not well understood. Imagined speech production (“articulation imagery”), which induces the kinesthetic feeling of articulator movement and its auditory consequences, provides a new angle because of the concurrent involvement of motor and perceptual systems. On the basis of previous findings in mental imagery of speech, we argue for the following regarding the induction mechanisms of mental imagery and the interaction between motor and perceptual systems: (1) Two distinct top-down mechanisms, memory retrieval and motor simulation, exist to induce estimation in perceptual systems. (2) Motor simulation is sufficient to internally induce the representation of perceptual changes that would be caused by actual movement (perceptual associations); however, this simulation process only has modulatory effects on the perception of external stimuli, which critically depends on context and task demands. Considering the proposed simulation-estimation processes as common mechanisms for interaction between motor and perceptual systems, we outline how mental imagery (of speech) relates to perception and production, and how these hypothesized mechanisms might underpin certain neural disorders.
Related Links	http://dx.doi.org/10.3389/fnhum.2012.00314
Starting Page	314
File Format	PDF
ISSN	16625161
e-ISSN	16625161
Journal	Frontiers in Human Neuroscience
Volume Number	6
Language	English
Publisher	Frontiers Media S.A.
Publisher Date	2012-01-01
Access Restriction	Open
Rights Holder	Frontiers Media S.A.
Subject Keyword	Biological Psychiatry Behavioral Neuroscience Neuropsychology and Physiological Psychology Neurology Psychiatry and Mental health Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Neurology Biological Psychiatry Behavioral Neuroscience Neuropsychology and Physiological Psychology Psychiatry and Mental Health

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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