For a Reactive Virtual Trainer(RVT), subtle timing and lifelikeness of motion is of primary importance. To allow for reactivity, movement adaptation, like a change of tempo, is necessary. In this paper we investigate the relation between movement tempo, its synchronization to verbal counting, time distribution, amplitude, and left-right symmetry of a clapping movement. We analyze motion capture...

A formal de nition of strong virtual synchrony capturing the semantics of virtual syn chrony as implemented in Horus is presented This de nition has the nice property that every message is delivered within the view in which it was sent However it is shown that in order to implement strong virtual synchrony the application program has to block messages during view changes An alternative de nitio...

We describe a novel scalable group membership service designed explicitly for wide area networks. Our membership service is scalable in the number of groups supported, in the number of members in each group, and in the topology each group spans. Our service also supplies the hooks needed to provide clients with full virtual synchrony semantics. Our service attains, on average, a low message ove...

During individuated finger movements, a high proportion of synchrony effects was found in spike-triggered averages (SpikeTAs) of rectified electromyographic activity aligned on the spikes discharged by primary motor cortex (M1) neurons. Because synchrony effects can be produced even if the trigger neuron itself provides no direct synaptic connections to motoneurons, such nonoscillatory synchron...

We introduce a synchrony map that translates the fine temporal organization of multi-unit responses in the visual cortex into an easily interpreted spatial display. We test the synchrony map on microelectrode array recordings in Area 17 of anesthetized and paralyzed cats. We first examine the synchrony map using averaged data and probability calculations to demonstrate orientation-dependent cha...

Estrous synchrony was tested using 10 pairs of sibling female rats (Rattus norvegicus). A Monte Carlo bootstrap simulation was used to construct random control groups to avoid previous statistical errors and to test for significance when there are irregular cycles. The 10 pairs of females did not exhibit estrous synchrony. The effect of cycle irregularity on the limits of synchrony was analyzed...