Figure 3

Mean ApEn values and group comparability of ApEn values. Mean ApEn values for patients in VS/UWS (a) and those in MCS (b) during different stimuli. Group comparability of ApEn values at resting state (c) and preferred music-induced ApEn differences in patients with VS/UWS and MCS (d). ApEn, approximate entropy; MCS, minimally conscious state; SON, subject’s own name; VS/UWS, vegetative state/unresponsive wakefulness syndrome.