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  Distinct fMRI responses to laughter, speech, and sounds along the human peri-sylvian cortex

Meyer, M., Zysset, S., von Cramon, D. Y., & Alter, K. (2005). Distinct fMRI responses to laughter, speech, and sounds along the human peri-sylvian cortex. Cognitive Brain Research, 24(2), 291-306. doi:10.1016/j.cogbrainres.2005.02.008.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-AC99-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-278A-B
Genre: Journal Article

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meyer_distinct.pdf (Publisher version), 637KB
 
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 Creators:
Meyer, Martin1, Author              
Zysset, Stefan2, Author              
von Cramon, D. Yves2, Author              
Alter, Kai1, Author              
Affiliations:
1Max Planck Research Group Neurocognition of Prosody, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634567              
2Department Cognitive Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634563              

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Free keywords: Neural basis of behavior; Cognition; Speech; Laughter; Vocal timbre; Functional Magnetic Resonance Imaging (fMRI); Peri-sylvian region; Auditory cortex
 Abstract: In this event-related fMRI study, 12 right-handed volunteers heard human laughter, sentential speech, and nonvocal sounds in which global temporal and harmonic information were varied whilst they were performing a simple auditory target detection. This study aimed to delineate distinct peri-auditory regions which preferentially respond to laughter, speech, and nonvocal sounds. Results show that all three types of stimuli evoked blood-oxygen-level-dependent responses along the left and right peri-sylvian cortex. However, we observed differences in regional strength and lateralization in that (i) hearing human laughter preferentially involves auditory and somatosensory fields primarily in the right hemisphere, (ii) hearing spoken sentences activates left anterior and posterior lateral temporal regions, (iii) hearing nonvocal sounds recruits bilateral areas in the medial portion of Heschl's gyrus and at the medial wall of the posterior Sylvian Fissure (planum parietale and parietal operculum). Generally, the data imply a differential regional sensitivity of peri-sylvian areas to different auditory stimuli with the left hemisphere responding more strongly to speech and with the right hemisphere being more amenable to nonspeech stimuli. Interestingly, passive perception of human laughter activates brain regions which control motor (larynx) functions. This observation may speak to the issue of a dense intertwining of expressive and receptive mechanisms in the auditory domain. Furthermore, the present study provides evidence for a functional role of inferior parietal areas in auditory processing. Finally, a post hoc conjunction analysis meant to reveal the neural substrates of human vocal timbre demonstrates a particular preference of left and right lateral parts of the superior temporal lobes for stimuli which are made up of human voices relative to nonvocal sounds.

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Language(s): eng - English
 Dates: 2005
 Publication Status: Published in print
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 Identifiers: eDoc: 238085
Other: P6519
DOI: 10.1016/j.cogbrainres.2005.02.008
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Title: Cognitive Brain Research
  Other : Cognit. Brain Res.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 24 (2) Sequence Number: - Start / End Page: 291 - 306 Identifier: ISSN: 0926-6410
CoNE: /journals/resource/954925385137_2