Blink rate response to haloperidol as possible predictor of therapeutic outcome

Assessment of short‐term variability in human spontaneous blink rate during video observation with or without head / chin support

“…An earlier study is referred to but neither report provides details of the magnitude of this (changed) variability. The downward trend in blink rates over the initial 10 blink events for subjects seated with a chin rest support (group 2) indicates that this type of experimental set up and protocol needs to be scrutinised further, if observation periods of one minute or less are used . Consideration needs to be given as to whether this is due to ‘awareness’ of being asked to adopt a rather unnatural posture for a few minutes at the slitlamp or simply an effect of the posture itself (even if all subjects claimed to be comfortable).…”