Language in Dreaming and Regional EEG Alpha Power

Hong, Christina; Jin, Yi; Potkin, Steven G.; Buchsbaum, Monte S.; Wu, Joseph C.; Callaghan, Glenn M.; Nudleman, Kenneth; Gillin, J. Christian

doi:10.1093/sleep/19.3.232

Cited by 20 publications

(18 citation statements)

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“…In relation to functional aspects, and assuming that a decrease in alpha power would indicate the activation of visual areas in REM state, as occurs in visual attention [25] and during mental imagery [26], Hong et al [27] obtained a lower alpha power over Broca's and Wer-nicke's area during REM sleep when the dream content was essentially verbal. This supports the hypothesis that cortical centers involved in language are activated when people speak or hear in dreaming, providing additional evidence that neural systems used in wakefulness are also used in dreaming.…”

Section: Discussionmentioning

confidence: 99%

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Spectral Structure and Brain Mapping of Human Alpha Activities in Different Arousal States

et al. 1999

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In a study with 10 young, healthy subjects, alpha activities were studied in three different arousal states: eyes closed in relaxed wakefulness (EC), drowsiness (DR), and REM sleep. The alpha band was divided into three subdivisions (slow, middle, and fast) which were analyzed separately for each state. The results showed a different spectral composition of alpha band according to the physiological state of the subject. Slow alpha seemed to be independent of the arousal state, whereas middle alpha showed a difference between REM and the other states. The fast-alpha subdivision appears mainly as a waking EEG component because of the increased power displayed only in wakefulness and lower and highly stable values for DR and REM. Scalp distribution of alpha activity was slightly different in each state: from occipital to central regions in EC, this topography was extended to fronto-polar areas in DR, with a contribution from occipital to frontal regions in REM sleep. These results provide evidence for an alpha power modulation and a different scalp distribution according to the cerebral arousal state.

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Section: Discussionmentioning

confidence: 99%

“…All these findings would suggest that alpha activity during REM sleep, which is attenuated (blocked?) [27] or augmented [28], depending on the dream content modality, could be linked to the dream occurrence.…”

Section: Discussionmentioning

confidence: 99%

Spectral Structure and Brain Mapping of Human Alpha Activities in Different Arousal States

et al. 1999

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“…This suppression of Alpha activity has been interpreted as reflecting the processing of dream content (Cantero et al, 1999, 2000; Esposito et al, 2004; Jouny, Chapoto, & Merica, 2000). In a single‐case study of a typical 36‐year‐old male, Hong et al (1996) showed that Alpha suppression is also apparent in nonposterior recording sites during dreaming, as they reported a negative correlation between expressive/receptive language in dream reports and Alpha activity over C3 and P3 electrodes during intermingled periods of tonic and phasic REM sleep. One type of information relevant for the interpretation of Alpha activity is given by the complex relationship between focal brain EEG activity and emotional dream content.…”

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confidence: 99%

“…There are also studies showing an association between quantified EEG activity and dream content. On one hand, Alpha EEG activity has been reported to correlate with dream recall (Esposito, Nielsen, & Paquette, 2004) and with elements of expressive or receptive language in dreams (Hong et al, 1996). The fact, however, that slow (8.0–10.00 Hz) and fast (10.0–12.0 Hz) ranges of Alpha activity reflect different (noncircadian and circadian) physiological substrates (Aeschbach et al, 1999) has not been taken into account.…”

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confidence: 99%

EEG correlates of emotions in dream narratives from typical young adults and individuals with autistic spectrum disorders

et al. 2007

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The relationship between emotional dream content and Alpha and Beta REM sleep EEG activity was investigated in typical individuals and in Autistic Spectrum Disorders (ASD). Dream narratives of persons with ASD contained fewer emotional elements. In both groups, emotions correlated positively with slow Alpha (8.0-10.0 Hz) spectral power over parieto-occipital and left central regions, as well as with a right occipital EEG asymmetry. Slow Alpha activity in ASD individuals was lower over midline and parasagittal areas and higher over lateral areas compared to controls. Both groups displayed a right-biased slow Alpha activity for midparietal and occipital (significantly higher in control) sites. Results indicate that Alpha EEG activity may represent a neurophysiological substrate associated with emotional dream content. Distinctive Alpha EEG patterns and asymmetries suggest that dream generation implies different brain connectivity in ASD.

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“…For example, alpha power decreases in the occipital area during REM sleep (Cantero et al, 1999;Gomez, Vazquez, Vaquero, LopenMendoza, & Cardoso, 1998) as well as during mental imagery in a waking state (Roland & Friberg, 1985), and over Broca's and Werniche's areas in REM sleep when the dreams are essentially verbal (Hong et al, 1996).…”

Section: Journal Of Neurotherapymentioning

confidence: 99%

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Journal of Neurotherapy

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Language in Dreaming and Regional EEG Alpha Power

Cited by 20 publications

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Spectral Structure and Brain Mapping of Human Alpha Activities in Different Arousal States

Spectral Structure and Brain Mapping of Human Alpha Activities in Different Arousal States

EEG correlates of emotions in dream narratives from typical young adults and individuals with autistic spectrum disorders

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