tonic state

ton·ic state

(ton'ik stāt)
Steady rigid muscle contractions with no relaxation.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
A recent study demonstrated bidirectional control of generalized epilepsy network by switching thalamocortical phasic firing to the tonic state using optogenetic modulation of the thalamus [36].