n. the personality type that, according to Sheldon’s constitutional theory of personality, is associated with an ectomorphic (linear, fragile) physique (see ectomorph). Cerebrotonia is characterized by a tendency toward introversion, restraint, inhibition, love of privacy and solitude, and sensitivity. —cerebrotonicadj.
a state of preparedness for action that is elicited as part of an emotional response and associated with such physiological indicators as changes in heart rate, respiratory rate, and muscle tension. The term is often used synonymously with action tendency but also refers to a general readiness for action that does not involve an urge to carry out a specific behavior.