Dataset Information

Spatiotemporal processing of somatosensory stimuli in schizotypy.

ABSTRACT: Unusual interaction behaviors and perceptual aberrations, like those occurring in schizotypy and schizophrenia, may in part originate from impaired remapping of environmental stimuli in the body space. Such remapping is contributed by the integration of tactile and proprioceptive information about current body posture with other exteroceptive spatial information. Surprisingly, no study has investigated whether alterations in such remapping occur in psychosis-prone individuals. Four hundred eleven students were screened with respect to schizotypal traits using the Schizotypal Personality Questionnaire. A subgroup of them, classified as low, moderate, and high schizotypes were to perform a temporal order judgment task of tactile stimuli delivered on their hands, with both uncrossed and crossed arms. Results revealed marked differences in touch remapping in the high schizotypes as compared to low and moderate schizotypes. For the first time here we reveal that the remapping of environmental stimuli in the body space, an essential function to demarcate the boundaries between self and external world, is altered in schizotypy. Results are discussed in relation to recent models of 'self-disorders' as due to perceptual incoherence.

SUBMITTER: Ferri F

PROVIDER: S-EPMC5146666 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Spatiotemporal processing of somatosensory stimuli in schizotypy.

Ferri Francesca F Ambrosini Ettore E Costantini Marcello M

Scientific reports 20161209

Unusual interaction behaviors and perceptual aberrations, like those occurring in schizotypy and schizophrenia, may in part originate from impaired remapping of environmental stimuli in the body space. Such remapping is contributed by the integration of tactile and proprioceptive information about current body posture with other exteroceptive spatial information. Surprisingly, no study has investigated whether alterations in such remapping occur in psychosis-prone individuals. Four hundred eleve ...[more]

PMID: 27934937

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Dataset Information

Spatiotemporal processing of somatosensory stimuli in schizotypy.

Publications

Spatiotemporal processing of somatosensory stimuli in schizotypy.

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