Neural encoding of tactile features by the somatosensory system serves many important perceptual roles, including texture and object discrimination, feedback for precision grip and manipulation, orofacial motor control speech, gesture, and eating...

The extent to which different cognitive processes are "embodied" is widely debated. Previous studies have implicated sensorimotor regions such as lateral intraparietal (LIP) area in perceptual decision making. This has led to the view that perceptual decisions are embodied in the same sensorimotor networks that guide body movements. We use event-related fMRI and effective connectivity analysis ...

This paper describes technology and tools for Intelligent HCI (IHCI) where human cognitive, perceptual, motor, and affective factors are modeled and used to adapt the H C interface. Intelligent HCI emphasizes that human behavior encompasses both apparent human behavior and the hidden mental state behind behavioral performance. IHCI expands on the interpretation of human activities, known as W4 ...

We report three experiments designed to investigate changes in tactile sensitivity over the time-course of goal-directed movements. A dual-task paradigm involving a speeded movement task and a non-speeded perceptual task was utilized. In the movement task, participants grasped a start computer mouse with their right hand (RH) and, at the go signal, reached for and grasped a goal mouse placed 25...

In the present experiment the question whether perceptual-motor skill acquisition can be context-dependent was addressed. The experiment was conducted in a static environment. This means the irrelevant stimuli did not co-vary with the task relevant stimuli. The serial reaction-time task paradigm (SRT, Nissen & Bullemer, 1987) was used. Effects on performance were assessed of three changes in pe...

With practice, performance on a task typically becomes faster, more accurate, and less prone to interference from competing tasks. Some theories of this performance change suggest it reflects a qualitative reorganization of the cognitive processing required for successful task performance. Other theories suggest this change in performance reflects a more quantitative change in the amount of pro...

Early intervention approaches for facilitating motor development in infants and children with Down syndrome have traditionally emphasised the acquisition of motor milestones. As increasing evidence suggests that motor milestones have limited predictive power for long-term motor outcomes, researchers have shifted their focus to understanding the underlying perceptual-motor competencies that infl...

The present study examined the temporal stationarity of the performance of 16 schizophrenic patients and 16 controls matched for age and sex in a bimanual coordination task and a perceptual task. In the motor task, rhythmic finger oscillations (alternating activity of homologue muscle groups) at increasing speed levels resulted in two measures, the preferred oscillation frequency and the critic...

Action observation training and motor imagery training have independently been studied and considered as an effective training strategy for improving motor skill learning. However, comparative studies of the two training strategies are relatively few. The purpose of this study was to investigate the effects of action observation training and motor imagery training on the development of mental r...

OBJECTIVE To verify if sleep disorders and different starting time to school have impaired motor skills in 5-year-old children. METHOD Cross-sectional design consisting of 132 children with sleep disorders and 136 normal controls of the public school in the city of São Paulo. The group with sleep disorders was identified based on a questionnaire, and motor tests for global motor coordination,...