The role of haptic information in shaping coordination dynamics: inertial frame of reference hypothesis.
Identifieur interne : 002110 ( Main/Exploration ); précédent : 002109; suivant : 002111The role of haptic information in shaping coordination dynamics: inertial frame of reference hypothesis.
Auteurs : Paula L. Silva [États-Unis] ; Michael T. TurveySource :
- Human movement science [ 1872-7646 ] ; 2012.
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Abstract
Current research suggests that non-visual perception of the spatial orientation of body segments is tied to vectors representative of their mass moment distribution (v(mm)). Our question was whether the relative orientation of v(mm) of right and left hands (Δv(mm)=v(mm) left-v(mm) right) constitutes haptic information supporting bimanual coordination and, if so, how it contributes to coordination dynamics. Blindfolded participants coordinated the motions of a pair of cross-shaped, hand-held pendulums that were either symmetrically loaded (Δv(mm)=0) or asymmetrically loaded (Δv(mm)≠0). The sign and magnitude of Δv(mm), in particular of the first moment vector, systematically affected the pattern of coordination (indexed by mean relative phase ϕ), but not its stability. These results suggest that (1) Δv(mm) specifies a frame of reference about which coordination is organized; and (2) that the changes in pattern were a function of the experimentally induced biases in this perceptual frame of reference and not a function of a functional asymmetry akin to detuning. The implications of the findings to the understanding of perceptual regulation of interlimb coordination were discussed.
DOI: 10.1016/j.humov.2011.10.002
PubMed: 22204926
Affiliations:
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Silva</name><affiliation wicri:level="2"><nlm:affiliation>University of Connecticut, Department of Psychology, Center for Ecological Study of Perception and Action, 406 Babbidge Road, Unit 1020, Storrs, CT 06269-1020, USA. psilva@eeffto.ufmg.br</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>University of Connecticut, Department of Psychology, Center for Ecological Study of Perception and Action, 406 Babbidge Road, Unit 1020, Storrs, CT 06269-1020</wicri:regionArea><placeName><region type="state">Connecticut</region></placeName></affiliation></author><author><name sortKey="Turvey, Michael T" sort="Turvey, Michael T" uniqKey="Turvey M" first="Michael T" last="Turvey">Michael T. Turvey</name></author></analytic><series><title level="j">Human movement science</title><idno type="eISSN">1872-7646</idno><imprint><date when="2012" type="published">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Functional Laterality</term><term>Humans</term><term>Kinesthesis</term><term>Orientation</term><term>Proprioception</term><term>Psychomotor Performance</term><term>Psychophysics</term><term>Sensory Deprivation</term><term>Touch</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Functional Laterality</term><term>Humans</term><term>Kinesthesis</term><term>Orientation</term><term>Proprioception</term><term>Psychomotor Performance</term><term>Psychophysics</term><term>Sensory Deprivation</term><term>Touch</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Current research suggests that non-visual perception of the spatial orientation of body segments is tied to vectors representative of their mass moment distribution (v(mm)). Our question was whether the relative orientation of v(mm) of right and left hands (Δv(mm)=v(mm) left-v(mm) right) constitutes haptic information supporting bimanual coordination and, if so, how it contributes to coordination dynamics. Blindfolded participants coordinated the motions of a pair of cross-shaped, hand-held pendulums that were either symmetrically loaded (Δv(mm)=0) or asymmetrically loaded (Δv(mm)≠0). The sign and magnitude of Δv(mm), in particular of the first moment vector, systematically affected the pattern of coordination (indexed by mean relative phase ϕ), but not its stability. These results suggest that (1) Δv(mm) specifies a frame of reference about which coordination is organized; and (2) that the changes in pattern were a function of the experimentally induced biases in this perceptual frame of reference and not a function of a functional asymmetry akin to detuning. The implications of the findings to the understanding of perceptual regulation of interlimb coordination were discussed.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Connecticut</li></region></list><tree><noCountry><name sortKey="Turvey, Michael T" sort="Turvey, Michael T" uniqKey="Turvey M" first="Michael T" last="Turvey">Michael T. Turvey</name></noCountry><country name="États-Unis"><region name="Connecticut"><name sortKey="Silva, Paula L" sort="Silva, Paula L" uniqKey="Silva P" first="Paula L" last="Silva">Paula L. Silva</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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