BACKGROUND Providing augmented visual feedback is one way to enhance robot-assisted surgery (RAS) training. However, it is unclear whether task specificity should be considered when applying augmented visual feedback. METHODS Twenty-two novice users of the da Vinci Surgical System underwent testing and training in 3 tasks: simple task, bimanual carrying (BC); intermediate task, needle passing...

Many studies of bimanual coordination have focused on the pervasive interference observed when people plan and produce non-symmetric movements. We investigated how the interference observed in one challenging bimanual task, simultaneously drawing non-symmetric three-sided squares (e.g., U and C), is modulated by practice. We assessed whether the benefits of practice were limited to the trained ...

Purpose: The sensorimotor cortex oscillations (frequency ranging between 12 and 15 Hz), commonly known as Sensorimotor Rhythm (SMR) has previously displayed a promising link between the performance of the visuomotor related to skill execution and part of psychology that is adaptive (e.g. the process linked attention which is automatic). This study examined the extent of SMR power in the executi...

Effective hand-eye coordination is an important aspect of training in laparoscopic surgery. This paper investigates the interdependency of the hand and eye movement along with the variability of their temporal relationships based on Granger-causality. Partial directed coherence is used to reveal the subtle effects of improvement in hand-eye coordination, where the causal relationship between in...

Effective hand-eye coordination is an important aspect of training in laparoscopic surgery. This paper investigates the interdependency of the hand and eye movement along with the variability of their temporal relationships based on Ganger-causality. Partial directed coherence is used to reveal the subtle effects of improvement in hand-eye coordination, where the causal relationship between ins...

OBJECTIVE We compared children's self-care performance and caregivers' perception of children's performance on functional goals established for children with hemiplegic cerebral palsy (CP) after unimanual constraint-induced movement therapy (CIMT) or hand-arm bimanual intensive training (HABIT). METHOD Sixteen children with CP were randomized to the CIMT or HABIT group. Interventions lasted f...

The authors examined possible differences in left- and right-handers on bimanual reaction times to centralized visual stimuli. Eighty participants (n = 40 in each group of left- and right-handers) were tested on unimanual and bimanual reaction time (RT) tasks. Consistently across the 2 groups, the dominant-hand RT was faster, on average, than the nondominant-hand RT, and unimanual RTs were fast...

To reveal the fundamental skills involved in slacklining, this study examined a hypothesis regarding single-leg standing on a slackline. In the field of practice, instructors teach learners how to maintain balance on a swinging flat belt (slackline), such as by moving their hands in parallel. We hypothesized that bimanual coordination in the horizontal direction might contribute to dynamic bala...

Within-hand variability was reduced on a repetitive tapping task when individuals tapped with 2 hands in comparison to single-handed tapping. When the total variability was decomposed into central timing and peripheral implementation components (A.M. Wing & A.B. Kristofferson, 1973), the bimanual advantage was attributed to decreased central variability. The improved consistency does not requir...

This study examined hand preference in baboons in a sample of 94 subjects for a unimanual task and in a sample of 104 subjects for a bimanual task. For the unimanual task, handedness was assessed by observing simple reaching for grains. For the bimanual task, tubes lined with peanut butter inside were presented to the baboons. The hand and the finger used to remove peanut butter were recorded. ...