Light, Sound, and Lucidity Signals A non-replication of inducing morning nap lucid dreams with targeted meta-cognitive reactivation and EEG case study on the neural correlates of lucid dreaming

Bukhari, Shervin

Light, Sound, and Lucidity Signals A non-replication of inducing morning nap lucid dreams with targeted meta-cognitive reactivation and EEG case study on the neural correlates of lucid dreaming

Files

s1027248_Bukhari,S_MSc_Thesis_2020.pdf (1.84 MB)

Authors

Bukhari, Shervin

Issue Date

2020-09-15

Language

en

URI

https://theses.ubn.ru.nl/handle/123456789/14657

Abstract

Lucid dreaming is a rare phenomena in which the dreamer is aware that they are dreaming while remaining asleep. Current focus in the eld studying lucid dreams (LDs) largely revolves around reliably inducing the state in participants. Recently, a study reported a 50% success rate in inducing LDs with a protocol that combines several induction methods with REM sleep sensory cueing. In the present study, we aimed to replicate these results and additionally obtain neural correlates of lucid dreaming with high-density electroencephalography (EEG) measurements. We were unable to replicate the previous results. On the contrary, we were did not observe any veri ed LD (N=29). Additionally, our analysis was unable to establish an e ect of the induction procedure on subjective lucidity measures. This raises questions as to what underlies these di erences in results, which we attempt to elucidate. In additional experimental sessions, one participant was able to become lucid during multiple REM periods. Thus, in a single-case study, EEG data from three veri ed LDs were contrasted to nonlucid REM periods using non-parametric comparisons in the spatio-spectral domain. We nd that LDs are associated with increased frontocentral alpha and an increased slope of 1/f power, both of which indicate a heightened state of arousal during LDs. However, the experimental circumstances warrant caution against drawing strong conclusions about these data.