English to Italian Medical General / Conversation / Greetings / Letters inversione della dominanza emisferica

Care colleghe, cari colleghi,
voi come tradurreste “callosally mediated” nel brano riportato di seguito, in cui si parla dell’inversione nella dominanza dall’emisfero sinistro a quello destro durante la regressione nel corso di una psicoterapia. Più avanti nel testo, si dice soltanto “callosal”, ma penso sia sottinteso "mediated" o forse no?
Presumo si riferisca al corpo calloso, ma è corretto dire: “mediata dal corpo calloso” oppure esiste un’espressione più precisa o più sintetica, soprattutto quando non è specificato "mediated" come negli ultimi esempi...?
Vi ringrazio molto!
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The neurobiological mechanism of regression from the “higher” left to the “lower” right hemisphere, acting at rapid and thereby unconscious levels, provides such transient shifts in brain laterality. *** Callosally mediated reversals of hemispheric dominance *** are known to take place at speeds between 50 and 100 milliseconds, well below conscious awareness. McGilchrist (2009) described this interhemispheric dynamic: “We must inhibit one in order to inhabit the other,” clearly implying that the left prefrontal cortex must be inhibited (taken off-line) in order to bring the disinhibited right prefrontal system from the background to the foreground of consciousness.

the therapeutic dyad can access an interpersonal synchronization mechanism that can transiently induce *** a callosal reversible dominance of the hemispheres *** in both patient and therapist, from the verbal and cognitive functions of their later-developing higher verbal left hemisphere to the nonverbal and social-emotional functions of their early-developing lower right hemisphere.

This ** callosal left-right shift, ** a “taking off of the higher and at the same time a letting go or expression of the lower” is critical to the clinician’s participation in mutual regressions.