In a study by Tzovara and colleagues, all nonsurvivors showed deterioration in mismatch negativity between two measurements, whereas all those patients who had an early improvement in auditory discrimination regained consciousness [ 82].
Immediately after viewing the film, participants completed a 5 min auditory stream of consciousness filler task (cf. Wegner, Erber, & Zanakos, 1993) and then again rated their mood (using the same pen and paper scales as described for the rest task), intended as a measure of mood recovery (cf. Campbell-Sills et al., 2006).
Another principle of classification leads to a list of 18 elements (dhatus): five sense organs, five objects of those senses, mind, the specific object of mind, and six kinds of consciousness (visual, auditory, olfactory, gustatory, tactual, and purely mental).
These findings provide the first empirical demonstration that activation of the human auditory system without reaching consciousness affects the perception of an ambiguous visual motion display.
The measurement of MLAEPs can be used to monitor continuously the consciousness level by auditory stimuli to the brain and can be measured quantitatively by using the Alaris auditory-evoked potential index (AAI).
Dr. Copolov, for example, suggests that the "voices" patients hear are really fragments of auditory memories "that come to consciousness fused with emotional content" and are then incorrectly evaluated as originating from an outside source.
The function of the causal principle of the homogeneity of the species is precisely that of ensuring that, say, when visual system and visible object come together, it is visual consciousness rather than auditory or olfactory consciousness that arises [for a detailed analysis of the complex issues surrounding the attainment of cessation, see Griffiths 1986, 66 and passim].
A variety of pathophysiological changes have been postulated to give rise to tinnitus, such as increased burst firing, enhanced neural synchrony, increased spontaneous activity, tonotopic map reorganization, abnormal coupling of networks involving auditory and nonauditory structures, and aberrant consciousness gating mechanisms [ 7].
Enoch and Trethowan [ 2] state that the four essential clinical features of the Ganser syndrome are: approximate answers, somatic conversion symptoms, clouding of consciousness, and visual or auditory pseudohallucinations. Controversy has always surrounded the precise nosological status of the Ganser syndrome.
