Dreams recall and auditory evoked potentials during propofol anaesthesia.
Paola Aceto, Elisabetta Congedo, Carlo Lai, Alessio Valente, Elisabetta Gualtieri, Germano De Cosmo
Neuroreport May 1, 2007 DOI: 10.1097/wnr.0b013e3280e129f5 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Observational study Peer reviewed |
|---|---|
| Population | Patients undergoing propofol anaesthesia |
| Interventions | Propofol audiotape containing one of two stories |
| Duration | 24-hour follow-up after awakening |
| Measures | middle-latency auditory evoked potentials (Pa latency), dream recall interview, declarative and nondeclarative memory tests |
| Topics | Dreaming |
| Keywords | Humans Propofol Anesthetics, intravenous Acoustic stimulation Statistics, nonparametric Dreams Mental recall Reaction time Evoked potentials, auditory Adolescent Adult Middle aged Female |
| Key findings | Patients who reported dream recall during propofol anaesthesia had shorter intraoperative Pa latencies of middle-latency auditory evoked potentials than those who did not recall dreams (P<0.001). The authors suggest that greater responsiveness of the primary auditory cortex is associated with dream recall formation during anaesthesia. |
Abstract
It is unclear whether shorter wave latencies of middle-latency-auditory-evoked-potentials may be associated to cognitive function other than nondeclarative memory. We investigated the presence of declarative, nondeclarative and dreaming memory in propofol-anaesthetized patients and any relationship to intraoperatively registered middle-latency-auditory-evoked-potentials. An audiotape containing one of two stories was presented to patients during anaesthesia. Patients were interviewed on dream recall immediately upon emergence from anaesthesia. Declarative and nondeclarative memories for intraoperative listening were assessed 24 h after awakening without pointing out positive findings. Six patients who reported dream recall showed an intraoperative Pa latency less than that of patients who were unable to remember any dreams (P<0.001). A high responsiveness degree of primary cortex was associated to dream recall formation during anaesthesia.
Citations in the library
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- Dreaming and awareness during dexmedetomidine- and propofol-induced unresponsiveness. British Journal of Anaesthesia July 1, 2018
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