| Popis: |
Our work has been aimed directly at the question of the nature of the spatio-temporal configurations of cerebral neural activities which elicit, or are at least uniquely correlated with, the conscious awareness of a somatosensory experience in the awake and alert individual. We have focused the study on the differences between cerebral functions associated with stimuli that are at or just above threshold level for eliciting a conscious sensory experience, as opposed to those with stimuli that are below such a threshold. The implication is that there are some unique differences between physiological cerebral states above and below this threshold level. The term threshold is used by us in tF.e broad sense of the just adequate levels for all significant parameters of a stimulus (electrical in our studies) not merely that for intensity (Libet et al., 1964; Libet, 1972). (To avoid confusion with threshold levels for various,other types of responses to stimuli, particularly for evoked potentials (EP’s), the thresholdlevels for eliciting a conscious sensory response will be referred to as „threshold-c.’) |
