Figure 2. Coherence between motor units within IPSIFDI.

Pooled coherence (A), phase (B) and cumulant density (C) for 25 motor unit pairs from the right first dorsal interosseous (IPSIFDI). Pooled phase is only indicated over those periods in which the pooled coherence was significant. The results of the χ² test are illustrated in D, which is significant at < 3.5 Hz and from 5-9 Hz. Horizontal dotted lines in this and subsequent figures indicate the 95 % confidence limits.