The classical mean negative asynchrony in sensorimotor synchronization is not universal in humans. A cross-cultural study.

The present study examines to what extent cultural background determines sensorimotor synchronization in humans. The direct comparison of Indian and French students, without particular experience in music or dance, or sport, was motivated by the hypothesis that musical exposure to different musical styles causes a variation in basic synchronization to sound function. At first rate limits of this capacity was sought, using a parametric design increasing the sound periodic frequency up to synchronization breakdown. No robust effect was found in that respect. However, another unpredicted change of the so-called negative mean asynchrony was found. Negative mean asynchrony is defined as the anticipation of movement with respect to sound, of about 40ms. The negative mean asynchrony simply disappears in Indians' participants. This result is very intriguing as negative mean asynchrony was considered ubiquitous for decades, and an invariant hallmark of human timing function. Revision of theoretical modelling of sensorimotor synchronization may be required to account to the found variation.

Teaching Real-Time Control Using Arduino: Timer ISR vs delayMicroseconds

Arduino microcontrollers are inexpensive and easy to program, making them very popular among hobbyists and “makers”. Arduinos are also surprisingly capable when it comes to creating real-time feedback control systems. This paper investigates several facets of using Arduino microcontrollers to teach students to create real-time control systems. A simplified approach to enforcing the real-time execution of a control law is introduced based on the delayMicroseconds function and its accuracy is compared to the standard timer interrupt approach. Initial assessment data is presented on whether or not the delayMicroseconds approach is easier for students to understand. The accuracy of the Arduino’s built-in timing function micros is also investigated.

Research on the Function of Hands Based on Mechanics and Kinematics

In track and field, triple jump is an influential and with complex technical difficulty among these track and field events. With the gradually improvement of scientific research and practice training in track and field events, their sports level also gradually improved. This paper describes the technique development and principle analysis of triple jump, emphasize the overall importance of movement rhythm and balance control in triple jump, further analyse balance control process of mechanical movement in triple jump, thus scientifically analyse both in the upper extremity balance control and timing function, which has important implications for the analysis and diagnosis of triple jump technology.