Real-time dialogue between experimenters and dreamers during REM sleep

Konkoly, Karen; Appel, Kristoffer; Chabani, Emma; Mangiaruga, Anastasia; Gott, Jarrod; Mallett, Remington; Caughran, Bruce; Witkowski, Sarah; Whitmore, Nathan W.; Mazurek, Christopher Y.; Berent, Jonathan B.; Weber, Frederik D.; Türker, Bașak; Leu‐Semenescu, Smaranda; Maranci, Jean Baptiste; Pipa, Gordon; Arnulf, Isabelle; Oudiette, Delphine; Dresler, Martin; Paller, Ken A.

doi:10.1016/j.cub.2021.01.026

Cited by 63 publications

(40 citation statements)

References 54 publications

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“…[16][17][18] Language during sleep has been mainly studied throughout incoming stimuli. [19][20][21][22] Nonetheless, ST implicitly proves that sleep is not incompatible with both overt and covert language production. 17,23, 24 Arnulf et al 10 investigated the formal features of ST language production, finding the decipherable verbal activations to be grammatically correct and consistent with daytime verbal productions.…”

Section: Introductionmentioning

confidence: 99%

Sleep talking versus sleep moaning: electrophysiological patterns preceding linguistic vocalizations during sleep

Mangiaruga

D’Atri

Scarpelli

et al. 2021

Sleep

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Sleep talking (ST) has been rarely studied as an isolated phenomenon. Late investigations over the psycholinguistic features of vocal production in ST pointed to coherence with wake language formal features. Therefore, we investigated the EEG correlates of Verbal ST as the overt manifestation of sleep-related language processing, with the hypothesis of shared electrophysiological correlates with wake language production.From a sample of 155 highly frequent STs, we recorded 13 participants (age range 19-30y, mean age 24.6 ± 3.3; 7F) via vPSG for at least 2-consecutive nights, and a total of 28 nights. We first investigated the sleep macrostructure of STs compared to 13 age and gender matched subjects. We then compared the EEG signal before 21 Verbal STs vs. 21 Non-verbal STs (moaning, laughing, crying, ...) in 6 STs reporting both vocalization types in Stage 2 NREM sleep.The 2x2 mixed ANOVA Group x Night interaction showed no statistically significant effect for macrostructural variables, but significant main effects for Group with lower REM (%), TST, TBT SEI and greater NREM (%) for STs compared to controls.EEG statistical comparisons (paired-samples Student's t-Test) showed a decrement in power spectra for Verbal STs vs. Non-verbal STs within the theta and alpha EEG bands, strongly lateralized to the left hemisphere and localized on centro-parietal-occipitals channels. A single left parietal channel (P7) held significance after Bonferroni correction.Our results suggest shared neural mechanisms between Verbal ST and language processing during wakefulness and a possible functional overlapping with linguistic planning in wakefulness.

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Section: Introductionmentioning

confidence: 99%

Sleep talking versus sleep moaning: electrophysiological patterns preceding linguistic vocalizations during sleep

Mangiaruga

D’Atri

Scarpelli

et al. 2021

Sleep

Self Cite

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“…In the case of lucid dreaming (being aware that you are asleep and dreaming, while still inside the dream), it is well established that cognitive functions such as working memory, planning, and metacognition can come "online" while the dreamer is still in rapid eye movement (REM sleep (Baird, Mota-Rolim, & Dresler, 2019), although they may not be functioning in their normal ways, leading to misrememberings, timeline, and novelty detection failures. Lucid dreamers can use volitional eye movements (detected by electrooculography [EOG] recordings in the sleep lab) whereas in REM sleep to communicate the fact that they are aware that they are dreaming to experimenters in the laboratory and, as shown in one recent multicentre study, even engage in two-way communication with experimenters while asleep and dreaming in unequivocal REM sleep (Konkoly et al, 2021).…”

Section: Notesmentioning

confidence: 99%

Why evolve consciousness? Neural credit and blame allocation as a core function of consciousness

Fitch¹

2022

Behav Brain Sci

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I concur with Merker and colleague's critiques, suggesting that hypotheses about the evolutionary function of consciousness can help address them. Brains are parallel systems that function to compute possible actions and predict outcomes. I hypothesize that a core function of consciousness per se is the global feedback of information about those actions actually executed, supporting local learning via neuronal updating.

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“…Dreams in general are challenging to measure, as feasibility in obtaining objective data via polysomnography is limited, and subjective reports can be inaccurate due to recall bias. A recent study (Konkoly et al, 2021) aimed to provide a solution to this delay between dreams and reporting dreams, demonstrating real-time, two-way communication with participants about their dreams while they were in REM sleep. With more research investigating what people are capable of while lucid dreaming, including responding to external stimuli, future research ought to investigate how individuals can benefit from lucid dreaming, such as reducing nightmares (Konkoly et al, 2021).…”

Section: Limitations and Future Researchmentioning

confidence: 99%

A moderated mediation model predicting the impact of nightmares on sleep quality.

Barngrover¹,

Zendels²,

Peach³

2021

Dreaming

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Nightmares can yield deleterious effects on sleep quality; therefore, it is important to identify modifiable predictors of nightmare distress in order to promote better sleep outcomes. Lucid dreaming and trait mindfulness are both associated with decreased nightmares and may indirectly improve sleep quality; furthermore, these factors may have synergistic effects. To test this, a moderated mediation model was examined. Contrary to our hypothesis, results showed that lucid dreaming was associated with greater nightmare distress, which predicted worse sleep quality, but this effect was moderated by total mindfulness and the subfacet of acting with awareness. For individuals with low and average mindfulness, lucid dreaming increased nightmare distress, yielding a negative indirect effect on sleep quality. These effects were not seen for individuals with high mindfulness; rather, a trend emerged in which lucid dreaming for individuals high in mindfulness may improve sleep quality via lowered nightmare distress. Findings can inform nonmedical approaches to reducing nightmare distress and suggest that abilities in lucid dreaming may only yield benefits on reducing nightmares and corresponding sleep quality among individuals who also possess high mindfulness skills, particularly acting with awareness and nonjudgemental mindfulness.

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Real-time dialogue between experimenters and dreamers during REM sleep

Cited by 63 publications

References 54 publications

Sleep talking versus sleep moaning: electrophysiological patterns preceding linguistic vocalizations during sleep

Sleep talking versus sleep moaning: electrophysiological patterns preceding linguistic vocalizations during sleep

Why evolve consciousness? Neural credit and blame allocation as a core function of consciousness

A moderated mediation model predicting the impact of nightmares on sleep quality.

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