The present study examined interpersonal synchrony during psychological counseling, focusing on heart rate synchrony. In counseling and psychotherapy, embodied is considered an important factor related to building rapport empathy. Recent synchrony/coordination studies have addressed this issue, not only at the behavioral level but also neurological (brain activity) physiological (cardiac levels. However, there little known literature in a context. Therefore, we conducted single exploratory...

Abstract An association between cognitive impairment and tripping over obstacles during locomotion in older adults has been suggested. However, owing to its memory-guided movement, whether this is more pronounced the trailing limb poorly known. We examined age-related changes stepping over, focusing on movements, their with performance. Age-related obstacle avoidance were by comparing foot kinematics of 105 103 younger when an obstacle. The difference clearance leading limbs (Δ clearance)...

An adequate foot clearance height while stepping over an obstacle is important for safety in daily life. In the present study, we examined whether visual illusions affect during a stepping-over action, and this further influenced by gaze behavior. Twelve participants stepped placed four meters away under conditions of three different characteristics: white, horizontal, or vertical lines. We measured participants’ clearances step-over action their behavior approaching phase. Participants...

Haptic-based vibrotactile biofeedback (BF) is a promising technique to improve rehabilitation of balance in stroke patients. However, the extent which BF training changes temporal structure center pressure (CoP) trajectories remains unknown. This study aimed investigate effect on CoP during quiet stance chronic patients using detrended fluctuation analysis (DFA). Nine (age; 81.56±44 months post-stroke) received regimen system twice week over four weeks. A Wii Balance board was used record...

Introduction An age-related decrease in the ability to exploit abundant degrees of freedom body, referred as motor flexibility, leads a heightened fall risk. The present study investigated flexibility stabilize toe position during obstacle crossing older adults and its correlation with magnitude foot elevation. Methods Twenty-six (70.9 ± 7.4 years old) 21 younger (25.4 5.0 walked crossed an obstacle, which dominant limb was always leading limb. uncontrolled manifold (UCM) analysis used...

Finger-tapping experiments were conducted to examine whether the dynamics of intrapersonal and interpersonal coordination systems can be described equally by Haken-Kelso-Bunz model, which describes inter-limb dynamics. This article reports results finger-tapping in both systems. Two within-subject factors investigated: phase mode number fingers. In experiment (Experiment 1), participants asked tap, paced a gradually hastening auditory metronome, looking at their fingers moving, using index...

Abstract For older adults especially, to perform everyday activities safely, adaptive locomotion that adjusts basic pattern according the environmental features is critical. It unknown, however, whether their locomotor patterns can be modified when there are subtle changes. We examined limb movements, focusing on obstacle avoidance and age-related changes during such situations. Younger (102, with a mean age of 27.5 years) (101, 78.3 participants walked across one (150 mm height) four...

An emerging perspective on human cognition and performance sees it as a kind of self-organizing phenomenon involving dynamic coordination across the body, brain environment. Measuring this faces major challenge. Time series obtained from such cognitive, behavioral, physiological are often complicated in terms non-stationarity non-linearity, continuous vs. categorical scales. Researchers have proposed several analytical tools frameworks. One method designed to overcome these complexities is...

In this study, the relationship between behavioral complexity (sample entropy, SEn) during steady walking and quickness of subsequent turning performance in older adults. Herein, healthy younger adults (n = 12 each) were instructed to walk straight then turn into an intersection surrounded by four pylons. This task was performed under two conditions: reactive pre-planned turning, where direction unknown until immediately before or informed beforehand, respectively. For adults, comparable...

Libet et al. (1983) revealed that brain activity precedes conscious intention. For convenience in this study, we divide into two parts: a field (CF) and an unconscious (UF). Most studies have assumed comparator mechanism or illusion of CF discuss the difference prediction postdiction. We propose problems to be discussed here are twisted sense agency between UF, another definitions postdiction mediation process for twist. This study specifically examines throughout observational heterarchy...

Introduction In recent decades, interpersonal coordination and synchrony have been extensively examined in the field of psychology cognitive science. Studies suggest that perceptual information enables noise may even enhance coordination. However, how these factors influence dynamics between head body movements remains unclear. This study investigated effect visual on during dyadic conversations. Methods The availability was manipulated by positioning a partition halfway pair participants,...

An experiment was conducted to reveal the differences between intra-personal and inter-personal systems in terms of perceptual effect on stability finger-tapping movement in-phase vs. anti-phase modes. We investigated a between-subjects factor, i.e., intra-/inter-personal condition, within-subject phase mode. In ten participants each bimanually tapped their index fingers table, time with metronome, at frequency gradually increasing from 1 3 Hz over 30-s trial. pairs were asked perform same...

As previous studies have suggested that bimanual coordination is important for slacklining, the authors questioned whether this skill plays a role in performance of fundamental task slacklining. To address question, compared single-leg standing on slackline between novices and experts terms dynamics within dynamical systems framework using relative phase recurrence quantification analysis measures. Five five participated experiment. Participants were required to perform slackline. collect...

Muroi et al. show that individuals with stroke have improved collision avoidance behavior when passing through an aperture while entering from the paretic-side of body. However, underlying mechanism remains unknown. We reanalyzed al.'s data to reveal how walk by examining changes in walking velocity and behavioral complexity (i.e., sample entropy, index (ir)regularity time series, regarded lower entropy as more regular less complex) focusing on approaching process. The results showed reduced...