Abstract
The relative-salience hypothesis has been proposed as a possible explanation for the stability of bimanual coordination. This explanation proceeds from a psychological viewpoint and is based on the following tenets: (1) cyclic joint motions involving two movements are conceived of as a unified event, (2) if a “single” point in each movement is seen as the most salient, the salient points of the two movements prefer to go together, and (3) in other cases, a unified event will be constrained by movement direction. In this investigation, we examined whether the relative-salience hypothesis could predict the type of constraint (i.e., action coupling vs movement direction) for various bimanual coordination movements. Participants performed six different joint movements in synchrony with metronome beats. Both index finger flexion/extension and forearm pronation/supination had a “single” salient point (JMsingleSP), the others had “two” salient points (JMtwoSP). Then, we applied the relative-salience hypothesis to four bimanual coordinations. The coupling of simultaneous forearm pronation was more stable than alternate pronation. Similarly, the coupling of finger flexion and forearm pronation was more stable than that of finger flexion and forearm supination. For the coordination of radial flexion/ulnar flexion and index finger flexion/extension as well as forearm pronation/supination and radial flexion/ulnar flexion, symmetric movements were more stable than asymmetric movements. The results indicated that the stability of bimanual coordination was predominantly constrained by coupling of salient points when using two JMsingleSP and it was predominantly constrained by movement direction when coordinating JMsingleSP and JMtwoSP. Thus, the relative-salience hypothesis was supported.
| Original language | English |
|---|---|
| Pages (from-to) | 1-10 |
| Number of pages | 10 |
| Journal | Experimental Brain Research |
| DOIs | |
| Publication status | Accepted/In press - 2018 Mar 15 |
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Keywords
- Cyclic movement
- Interlimb coordination
- Joint movement
- Relative-salience hypothesis
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Effect of salient points in movements on the constraints in bimanual coordination. / Zheng, Yan; Muraoka, Tetsuro; Nakagawa, Kento; Kato, Kouki; Kanosue, Kazuyuki.
In: Experimental Brain Research, 15.03.2018, p. 1-10.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of salient points in movements on the constraints in bimanual coordination
AU - Zheng, Yan
AU - Muraoka, Tetsuro
AU - Nakagawa, Kento
AU - Kato, Kouki
AU - Kanosue, Kazuyuki
PY - 2018/3/15
Y1 - 2018/3/15
N2 - The relative-salience hypothesis has been proposed as a possible explanation for the stability of bimanual coordination. This explanation proceeds from a psychological viewpoint and is based on the following tenets: (1) cyclic joint motions involving two movements are conceived of as a unified event, (2) if a “single” point in each movement is seen as the most salient, the salient points of the two movements prefer to go together, and (3) in other cases, a unified event will be constrained by movement direction. In this investigation, we examined whether the relative-salience hypothesis could predict the type of constraint (i.e., action coupling vs movement direction) for various bimanual coordination movements. Participants performed six different joint movements in synchrony with metronome beats. Both index finger flexion/extension and forearm pronation/supination had a “single” salient point (JMsingleSP), the others had “two” salient points (JMtwoSP). Then, we applied the relative-salience hypothesis to four bimanual coordinations. The coupling of simultaneous forearm pronation was more stable than alternate pronation. Similarly, the coupling of finger flexion and forearm pronation was more stable than that of finger flexion and forearm supination. For the coordination of radial flexion/ulnar flexion and index finger flexion/extension as well as forearm pronation/supination and radial flexion/ulnar flexion, symmetric movements were more stable than asymmetric movements. The results indicated that the stability of bimanual coordination was predominantly constrained by coupling of salient points when using two JMsingleSP and it was predominantly constrained by movement direction when coordinating JMsingleSP and JMtwoSP. Thus, the relative-salience hypothesis was supported.
AB - The relative-salience hypothesis has been proposed as a possible explanation for the stability of bimanual coordination. This explanation proceeds from a psychological viewpoint and is based on the following tenets: (1) cyclic joint motions involving two movements are conceived of as a unified event, (2) if a “single” point in each movement is seen as the most salient, the salient points of the two movements prefer to go together, and (3) in other cases, a unified event will be constrained by movement direction. In this investigation, we examined whether the relative-salience hypothesis could predict the type of constraint (i.e., action coupling vs movement direction) for various bimanual coordination movements. Participants performed six different joint movements in synchrony with metronome beats. Both index finger flexion/extension and forearm pronation/supination had a “single” salient point (JMsingleSP), the others had “two” salient points (JMtwoSP). Then, we applied the relative-salience hypothesis to four bimanual coordinations. The coupling of simultaneous forearm pronation was more stable than alternate pronation. Similarly, the coupling of finger flexion and forearm pronation was more stable than that of finger flexion and forearm supination. For the coordination of radial flexion/ulnar flexion and index finger flexion/extension as well as forearm pronation/supination and radial flexion/ulnar flexion, symmetric movements were more stable than asymmetric movements. The results indicated that the stability of bimanual coordination was predominantly constrained by coupling of salient points when using two JMsingleSP and it was predominantly constrained by movement direction when coordinating JMsingleSP and JMtwoSP. Thus, the relative-salience hypothesis was supported.
KW - Cyclic movement
KW - Interlimb coordination
KW - Joint movement
KW - Relative-salience hypothesis
UR - http://www.scopus.com/inward/record.url?scp=85044061493&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85044061493&partnerID=8YFLogxK
U2 - 10.1007/s00221-018-5236-0
DO - 10.1007/s00221-018-5236-0
M3 - Article
C2 - 29546653
AN - SCOPUS:85044061493
SP - 1
EP - 10
JO - Experimental Brain Research
JF - Experimental Brain Research
SN - 0014-4819
ER -