The Interaction of Tactile Information and Movement Amplitude in a Multijoint Bimanual Circle-Tracing Task: Phase Transitions and Loss of Stability

2005 ◽  
Vol 58 (5) ◽  
pp. 769-787 ◽  
Author(s):  
John J. Buchanan ◽  
Young U. Ryu
Keyword(s):  
Adaptive Response ◽  
Bimanual Coordination ◽  
Sensory Information ◽  
Adaptive Behaviour ◽  
Loss Of Stability ◽  
Movement Amplitude ◽  
Tactile Information ◽  
Movement Frequency ◽  
Response Enhancement ◽  
Coordination Patterns

Adaptive behaviour in bimanual coordination was examined with the use of a bimanual circle-tracing task. Circle diameter and tactile information were manipulated to form four tracing conditions: tracing a pair of 3-cm diameter circles with the tips of the index fingers (3F) or hand-held styli (3S) and tracing a pair of 10-cm diameter circles with the tips of the index fingers (10F) or hand-held styli (10S). Movement frequency was increased in all conditions. In the 3F, 3S, and 10S tracing conditions, an abrupt transition from asymmetric to symmetric coordination was the main adaptive response, while in the 10F tracing condition, phase wandering was the main adaptive response. Enhancement of fluctuations in relative phase, a signature of loss of stability, occurred before the transition from asymmetric to symmetric coordination. Movement frequency and movement amplitude interact as control parameters in this task. The results are discussed with reference to tactile surface contact and joint motion as sources of sensory information that can be used to stabilize bimanual coordination patterns. The presence or absence of tactile information is directly linked to the specific form of adaptive behaviour (phase transition or phase wandering) that emerges as a function of required movement amplitude and required pacing frequency.

Aging, Attention, and Bimanual Coordination

2002 ◽  
Vol 21 (4) ◽  
pp. 549-557 ◽  
Author(s):  
Timothy D. Lee ◽  
Laurie R. Wishart ◽  
Jason E. Murdoch
Keyword(s):  
Older Adults ◽  
Bimanual Coordination ◽  
Alternative Explanation ◽  
Digit Number ◽  
Younger Adults ◽  
Age Related ◽  
Movement Frequency ◽  
Effects Of Aging ◽  
Coordination Patterns

ABSTRACTAlthough aging is normally associated with declines in motor performance, recent evidence suggests that older adults suffer no loss in some measures of bimanual coordination relative to younger adults. Two hypotheses for this finding were compared in the present research. One hypothesis was based on the assumption that these coordination patterns are automatic and relatively impervious to the effects of aging. An alternative explanation is that older adults maintain this level of bimanual coordination at a cost of increased attention demand. These hypotheses were tested in an experiment in which bimanual coordination patterns (in-phase and anti-phase) were paced at two metronome frequencies (1 and 2 Hz), either alone or together, with serial performance of an attention-demanding task (adding 3s to a two-digit number at a 1 Hz pace). The results of the study provided some support for both hypotheses. The automaticity view was supported only for the coordination patterns at the 1 Hz metronome frequency. Support for an attention allocation hypothesis was shown in the observed-movement frequency data, as older adults tended to sacrifice movement frequency at the 2 Hz metronome pace in order to maintain performance in the movement and counting tasks. These findings are discussed relative to recent accounts of the role of automaticity in the absence of age-related differences in the performance of cognitive tasks.

Effects of Learning and Movement Frequency on Polyrhythmic Tapping Performance

2000 ◽  
Vol 90 (2) ◽  
pp. 675-690 ◽  
Author(s):  
Makoto Tajima ◽  
Koji Choshi
Keyword(s):  
High Frequency ◽  
Task Analysis ◽  
Bimanual Coordination ◽  
Low Frequencies ◽  
Movement Frequency ◽  
Coordination Patterns

This study examined the effect of learning a complex bimanual coordination task at different movement frequencies. 30 subjects performed 5:3 polyrhythmic tapping at either high, medium, or low movement frequency on a rhythmic synchronization task and then reproduced the polyrhythmic pattern repeatedly in the spontaneous task. Analysis showed that practice on the synchronization task qualitatively changed correct responses into anticipatory ones. The synchronization learning of the polyrhythm caused the anticipatory responses and so, may involve memorization of serial positions within the polyrhythm. Also, more anticipatory responses were indicated in performance at the medium and low frequencies than at the high frequency on the synchronization task. In addition, deviations of taps from expected tapping positions were observed in performance of the spontaneous task at the high frequency. These results suggest that the movement frequency qualitatively influenced the learning of this bimanual coordination. Especially at the high frequency, frequent shifts to other coordination patterns occurred on the spontaneous task. This means that the performance at higher frequency is more strongly affected by entrainment between the two hands.

Stability of Rhythmic Finger Movements in Children with a Developmental Coordination Disorder

Motor Control ◽  
1998 ◽  
Vol 2 (1) ◽  
pp. 34-60 ◽  
Author(s):  
M.J.M. Volman ◽  
Reint H. Geuze
Keyword(s):  
Relaxation Time ◽  
Bimanual Coordination ◽  
Developmental Coordination Disorder ◽  
Loss Of Stability ◽  
Finger Movements ◽  
Initial Stability ◽  
Rhythmic Coordination ◽  
The Stability ◽  
Coordination Patterns ◽  
Coordination Disorder

The stability of single and bimanual (i.e., in-phase and antiphase) rhythmic finger movements was studied in 24 children with a developmental coordination disorder (DCD) and 24 matched controls from a dynamic pattern perspective. Stability was assessed by applying perturbations and measuring the time the system needed to return to its initial stability (i.e., the relaxation time). In addition, fluctuations of the patterns were measured. For antiphase coordination patterns, the frequency at which loss of stability occurred was also determined. Children with DCD displayed less stable single and bimanual rhythmic coordination patterns than control children. Further, within the DCD group, 9 children were identified as having particularly poor bimanual coordination stability. Individual differences suggested that variability of individual limb oscillations might have contributed to this poorer interlimb coordination stability. Findings were discussed in relation to a previous study on DCD in which the Wing-Kristofferson timekeeper model was applied.

Bimanual Circle Drawing during Secondary Task Loading

Motor Control ◽  
1998 ◽  
Vol 2 (2) ◽  
pp. 106-113 ◽  
Author(s):  
Jeffery J. Summers ◽  
Winston D. Byblow ◽  
Don F. Bysouth-Young ◽  
Andras Semjen
Keyword(s):  
Cognitive Processes ◽  
Secondary Task ◽  
Coordination Mode ◽  
Transition Frequency ◽  
Counting Task ◽  
Symmetrical Pattern ◽  
Asymmetrical Pattern ◽  
Movement Frequency ◽  
Coordination Patterns ◽  
Circle Drawing

Seven right-handed participants performed bimanual circling movements in either a symmetrical or an asymmetrical coordination mode. Movements were paced with an auditory metronome at predetermined frequencies corresponding to transition frequency, where asymmetrical patterns became unstable, or at two-thirds transition frequency, where both symmetrical and asymmetrical patterns were stable. The pacing tones were presented in either a high (1000 Hz) or low (500 Hz) pitch, and the percentage of high-pitched tones during a 20 s trial varied between 0% and 70%. Participants were instructed to count the number of high-pitched pacing tones that occurred during a trial of bimanual circling. Overall, the symmetrical pattern was more stable than the asymmetrical pattern at both frequencies. Errors on the tone-counting task were significantly higher during asymmetrical circling than symmetrical circling but only at the transition movement frequency. The results suggest that cognitive processes play a role in maintaining coordination patterns within regions of instability.

Intentional Switching Between Bimanual Coordination Patterns

2017 ◽  
Vol 50 (5) ◽  
pp. 538-556 ◽  
Author(s):  
Chaoyi Wang ◽  
Deanna M. Kennedy ◽  
Stefan Panzer ◽  
Charles H. Shea
Keyword(s):  
Bimanual Coordination ◽  
Coordination Patterns

Bimanual control strategies

2018 ◽  
Vol 72 (4) ◽  
pp. 966-978
Author(s):  
Chaoyi Wang ◽  
Charles H Shea
Keyword(s):  
Control Strategy ◽  
Bimanual Coordination ◽  
Control Strategies ◽  
Circular Path ◽  
Coordination Pattern ◽  
Bimanual Control ◽  
Straight Line ◽  
Index Of Difficulty ◽  
Line Path ◽  
Coordination Patterns

Two tasks (A and B) were designed which required participants to sequentially move through four target positions in a Lissajous display. Task A was designed so that participants could complete the task using either unimanual or bimanual control strategies. Task B was designed so that participants could complete the task using relatively simple or more complex bimanual control strategies. The purpose of this study was to determine which control strategy the participant utilises to complete the two tasks when Lissajous displays are provided and to determine the degree to which the size of the targets influences the control strategy chosen under these conditions. The movement amplitude between two adjacent targets and the target size resulted in an Index of Difficulty (ID) of 2 and 4 for each task. For both tasks, participants practised 15 trials (30 s per trial) for each ID and then was administered a test trial. The results for both Tasks A and B indicated that the ID2 condition resulted in a circular path, whereas the ID4 condition resulted in a straight-line path on the Lissajous plot. This suggests that at the low ID condition participants produced a continuous 1:1 with 90° phase offset bimanual coordination pattern. At the high ID condition, the participants consistently chose to switch to a more stable unimanual left and right movements in Task A and to transition between in-phase and anti-phase bimanual coordination patterns in Task B. In addition, both limbs’ movements were more harmonic in the low ID condition than in the high ID condition.

Bimanual coordination patterns are stabilized under monitoring-pressure

2017 ◽  
Vol 235 (6) ◽  
pp. 1909-1918 ◽  
Author(s):  
John J. Buchanan ◽  
Inchon Park ◽  
Jing Chen ◽  
David L. Wright ◽  
Ranjana K. Mehta
Keyword(s):  
Bimanual Coordination ◽  
Coordination Patterns
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