measurement of voluntary immobility amount of time spent in voluntary immobility 2012-08-27T10:27:44Z CMO:0001043 Measurement of the total amount of experiment time that an organism or experimental subject spends frozen, that is, not moving from one place or position to another, when such behavior originated with or was undertaken, controlled, or accomplished as a result of that organism's free will or choice. amount of time spent frozen amount of time spent in freeze behavior amount of time spent in freezing behavior clinical_measurement_ontology jsmith