1. , There are two types of arousal, according to Hess op1961cp: Ergotropic arousal denotes behavioral patterns characterized by increased activity of the sympathetic nervous system and an activated psychic state. Trophotropic arousal results from an integration of parasympathetic with somato‐motor activities to produce behavioral patterns that decrease the sensitivity to external stimuli.
2. , It is not easy to explain why stateboundness is somewhat similar to but nevertheless not quite the same as state‐dependent learning. An example may illustrate our point. We find, for instance, that during visual, tactile and intermodal magnitude estimations the straight relationship between log Stimulus and log Response is altered neither by the hallucinogenic drug psilocybin nor by ?9‐THC, an active ingredient of marijuana although the drugs affect the exponent opncp and–or the constant opkcp of the psychophysical power law R=k.Sn opShaffer, Hill and Fischer, 1972cp. Thus, there are drug‐induced changes but there is also a remarkable consistency of the straight line relationship which in some respect could be called a stereotypy.
3. , Analogously, stateboundness is to a certain extent only an apparent re‐experiencing of a specific cortical interpretation bound to a particular subcortical state opof arousalcp since stateboundness contains a ‘built‐in’ nonspecific stereotypy which is implicit in the increasing loss of freedom in cortical interpretative repertoire whenever we depart on a voyage of higher levels of arousal.
4. , We shall be more explicit about this later on and describe the ‘archetypal’ stereotypy in, more detail. In short, the essence of the ‘loss of freedom’, from mainly left‐hemispheric, i.e. rational control, is that higher ranges of arousal can only be interpreted as creative, hyperphrenic, catatonic and ecstatic experiences.
5. , The occurrence of archetypal imagery during hallucinogenic drug‐induced waking dream states and REM‐sleep may also be—at least to some extent—related to the restricted repertoire of hyperaroused states.