Editorial: Transitions between Consciousness and Unconsciousness

Editorial: Transitions between Consciousness and Unconsciousness

Consciousness and unconsciousness in teaching and learning

This study considers the emerging issue of consciousness in pedagogy both theoretically and practically. It examines why this issue is of fundamental significance for teaching and learning. Basic assumptions are clarified and the psychological and philosophical fundamentals of consciousness theory explored. Some surprising and counter-intuitive conclusions are reached. It is shown that in the p...

Consciousness and unconsciousness: an EEG perspective.

At first glance, defining unconsciousness may seem easier than defining it's counterpart consciousness. Indeed, consciousness has many definitions 1 , while unconsciousness is " just " the absence of consciousness. However, the study of patients with epilepsy or severe disorders of consciousness (e.g., coma and vegetative states) or focal deficits of consciousness (e.g., blindsight) and studies...

Analysis of the EEG bispectrum, auditory evoked potentials and the EEG power spectrum during repeated transitions from consciousness to unconsciousness.

We have compared the auditory evoked potential (AEP) index (a numerical index derived from the AEP), 95% spectral edge frequency (SEF), median frequency (MF) and the bispectral index (BIS) during alternating periods of consciousness and unconsciousness produced by target-controlled infusions of propofol. We studied 12 patients undergoing hip or knee replacement under spinal anaesthesia. During ...

Intracranial EEG power spectra and phase synchrony during consciousness and unconsciousness.

Power density spectra and phase synchrony measurements were taken from intracranial electrode grids implanted in epileptic subjects. Comparisons were made between data from the waking state and from the period of unconsciousness immediately following a generalised tonic-clonic seizure. Power spectra in the waking state resembled coloured noise. Power spectra in the unconscious state resembled c...