Fragments of fish melanophore cells can form and center aggregates of pigment granules by dynein-motor-driven transport along a self-organized radial array of microtubules (MTs). We present a quantitative model that describes pigment aggregation and MT-aster self-organization and the subsequent centering of both structures. The model is based on the observations that MTs are immobile and treadm...

A resonant inertial impact rotary piezoelectric motor based on a self-clamping structure is designed, assembled, and tested. The designed mainly includes rotor (two vibrators, preload mechanism, intermediate connection mechanism), clamping another auxiliary mechanism. ceramic sheet the drives vibrator to swing under excitation of single harmonic wave. Because there mechanism formed by combinati...

This opinion piece offers a commentary on the four papers that address the theme of the development of self and other understanding with a view to highlighting the important contribution of developmental research to understanding of mechanisms of social cognition. We discuss potential mechanisms linking self-other distinction and empathy, implications for grouping motor, affective and cognitive...

A multi-degree of freedom (multi-DOF) ultrasonic motor is anticipated as an actuator for the next generation because it can drive three-DOF motion with high torque and low noise. Before a multi-DOF ultrasonic motor can be used as a servomotor in actual robots, we have to develop a proper pre-loading mechanism and control algorithm for quick multi-DOF motion. This paper proposes a pre-loading me...

A novel motor learning method is present based on the cooperation of the cerebellum and basal ganglia for the behavior learning of agent. The motor learning method derives from the principle of CNS and operant learning mechanism and it depends on the interactions between the basal ganglia and cerebellum. The whole learning system is composed of evaluation mechanism, action selection mechanism, ...

abstract background: the purpose of the present study is to determine the frequency and severity of depression in post-stroke patients. methods: based on a cross-sectional research design, 30 recent stroke outpatients were assessed with dsm-iv interview for depression and two self-rating depression scales, ces-d and bdi. sex differences in depression, the relationship between depression and the...

one of the most difficult and the most common behavioral problems in people with mental retardation, from mild to severe, that adversely affect interpersonal behavior and unpleasant effect on people's moods and mental self. social skills is a process that individuals understand and predict the behavior of others and also control their behavior and regulate social interactions.quasi-experimental...

 Abstract Background: The purpose of the present study is to determine the frequency and severity of depression in post-stroke patients. Methods: Based on a cross-sectional research design, 30 recent stroke outpatients were assessed with DSM-IV interview for depression and two self-rating depression scales, CES-D and BDI. Sex differences in depression, the relationship between depression and th...