While complex hands seem to offer generality, simple hands are often more practical. This raises the question: how do generality and simplicity trade off in the design of robot hands? This paper explores the tension between simplicity in hand design and generality in hand function. It raises arguments both for and against simple hands, it considers several familiar examples, and it proposes an ...

Performing a complex unimanual motor task markedly increases activation not only in the hemisphere contralateral to the task-performing hand but also in the ipsilateral hemisphere. Transcranial magnetic stimulation studies showed increased motor evoked potential amplitude recorded in resting hand muscles contralateral to the task-performing hand during a unimanual motor task, and transcallosal ...

OBJECTIVE Attention-based coping strategies for pain are widely used in pediatric populations. The purpose of this study was to test a novel mindful attention manipulation on adolescent's experimental pain responses. Furthermore, the relationship between state mindfulness and experimental pain was examined. METHODS A total of 198 adolescents were randomly assigned to a mindful attention manip...

This study used eye-movement tracking to investigate how students engage with the learning process of reading science articles or without hands-on manipulation a pulley system and their influences on outcomes. experiment 2 (reading easy difficult articles) × (with manipulation) between-subject design. Seventy-nine undergraduate participated. They first read article about rotational mechanics th...

Virtual environments such as the Responsive WorkbenchTM1 allow the close manipulation of virtual objects. We define close manipulation as either direct manipulation or manipulation at a relatively small distance. This paper reports on two studies on close manipulation using the Responsive Workbench. The first study investigates the influence of manipulation distance on performance in a 3D locat...

the favorable gains gleaned from the provision of pre-task planning time (ptp) have struck a chord with sla researchers as they try to manipulate task features to promote language production and development. in a similar vein, the present study is a two-fold attempt to first compare the effect of the length of pre-task planning time on discourse-analytic measures in narrative written production...

In this work, an approach for extracting features among multiple observations towards manipulation tasks recognition is proposed . The diversity of information such as hand motion, fingers flexure and object trajectory are important to represent a manipulation task. By using the relevant features we can generate a general form to represent a specific dataset of manipulation tasks. The hand moti...

To perform dextrous manipulation e ciently, it is necessary to coordinate the interactions of many component processes. This paper investigates one approach to coordination: discrete-event systems. The applicability of discrete-event systems to the modeling of dextrous manipulation tasks is studied. Discrete-event control theory o ers formal methods for determining whether a coordinator of the ...