Clinicians and researchers lack accuracy in assessing psychomotor
functions of patients. Several objective monitoring techniques have
recently been proposed with the goal of compiling accurate determinations.
These include electromyographic determinations of facial expressions of
emotion, measurement of speech phonation and pause times, and use of
movement-activated recording monitors to quantify motility. Objective
psychomotor assessments may improve classification, longitudinal
monitoring, treatment selection, and prediction of outcome for patients
with depression and mania.