REM sleep dream mentation in right hemispherectomized patients

McCormick, Lisa Craft; Nielsen, Toré; Ptito, Maurice; Hassainia, Farid; Ptito, Alain; Villemure, Jean‐Guy; Vera, Cristián L.; Montplaisir, Jacques

doi:10.1016/s0028-3932(96)00113-3

Cited by 25 publications

(8 citation statements)

References 32 publications

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“…In a study comparing dream narratives of persons with right hemispherectomy (RH) and control participants, more animal figures and olfactory components were found in the experimental group (McCormick et al 1997) which is not the case with our results. Moreover, recall of content was not different between control and RH group, contrary to the present results.…”

Section: Neuro-anatomic Accountscontrasting

confidence: 99%

Dream Content Analysis in Persons with an Autism Spectrum Disorder

D’Aoust

Lusignan

Braun

et al. 2007

J Autism Dev Disord

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Dream questionnaires were completed by 28 young adults with autism spectrum disorder (ASD) participants. Seventy-nine typically developed individual served as the control group. In a subset of 17 persons with ASD and 11 controls matched for verbal IQ, dream narratives were obtained following REM sleep awakenings in a sleep laboratory. Questionnaires revealed that participants with ASD, compared to controls, had fewer recollections of dreaming, fewer bad dreams and fewer emotions. In the sleep laboratory, dream content narratives following REM sleep awakenings were shorter in ASD participants than in controls. ASD participants also reported fewer settings, objects, characters, social interactions, activities, and emotions. It is concluded that these characteristics of dreaming in ASD may reflect neurocognitive dimensions specific to this condition.

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Section: Neuro-anatomic Accountscontrasting

confidence: 99%

Dream Content Analysis in Persons with an Autism Spectrum Disorder

D’Aoust

Lusignan

Braun

et al. 2007

J Autism Dev Disord

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“…The former finding is in agreement with the Antrobus hypothesis (6) of a specific involvement of temporal–occipital cortical areas of both hemispheres in triggering the visual–perceptual and visual–constructive components of the dream experience in healthy individuals. Some support for this hypothesis has been provided by dream experiences of epilepsy patients before and after right lobectomy, in which no clear‐cut difference in DR frequency, content characteristics, and emotional tone was detected (43). The latter finding is in line with the report of Schanfald et al (11) that the extension of the lesion is a critical factor in reducing dream production and recall.…”

Section: Discussionsupporting

confidence: 68%

Dream Recall Frequency in Epilepsy Patients with Partial and Generalized Seizures: A Dream Diary Study

et al. 2002

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Summary:Purpose: The frequency of dream recall (DR) in patients with brain diseases has proved to be indicative of the relation between sleep disturbances and the functioning of cognitive processes during sleep. In this study we attempted to ascertain whether DR frequency in patients with complex partial seizures (CPSs) is higher than that in those with generalized seizures.Methods: DR frequency was assessed by means of a 60-day dream diary in patients with CPSs, whose epileptic focus was in the right (n ‫ס‬ 12) or left temporal lobe (n ‫ס‬ 28), and with idiopathic generalized seizures (n ‫ס‬ 21). The patients enrolled in the study were not impaired in global cognitive and memory functioning.Results: The ability to recall dreams was established in nearly all patients with either CPSs or generalized seizures. DR frequency resulted significantly higher (about twice) in patients with CPSs, regardless of (a) the side of the epileptic focus, (b) the presence of a cerebral lesion detectable on a computed tomography (CT) scan, or (c) the occurrence of seizures in the previous day.Conclusions: These findings indicate that overall, DR occurs in medicated epilepsy patients with CPSs more frequently than reported in previous studies. The high DR frequency observed in these patients, regardless of the side of the epileptic focus, is in agreement with the assumption that tempoparietal areas of both hemispheres are involved in the production and recall of the dream experience.

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“…Yet another option is to collect MSE reports in a sleep laboratory upon spontaneous or forced (instrumental) awakening from a predefined sleep stage, usually the REM [ 15 , 16 , 17 , 18 , 19 ]. The main reason REM reports are of special interest is because it has been found that this sleep produces higher recall rates than the NREM and longer, more perceptually vivid, motorically animated, and emotionally charged reports, which are moreover less related to waking life and current personal concerns.…”

Section: Introductionmentioning

confidence: 99%

“…Still, chemosensory content is rare even in REM reports. For instance, McCormick, Nielsen, Ptito, Hassainia, Ptito, Villemure, Vera and Montplaisir [ 15 ], who examined 80 reports obtained from eight participants only found three mentions (4%) of chemosensory content. Similarly, out of 39 reports there was only a single explicit mention (3%) of olfactory content in a study carried out by Schredl, Atanasova, Hoermann, Maurer, Hummel, and Stuck [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Olfaction-Related Factors Affecting Chemosensory Dream Content in a Sleep Laboratory

et al. 2021

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Mental activity in sleep often involves visual and auditory content. Chemosensory (olfactory and gustatory) experiences are less common and underexplored. The aim of the study was to identify olfaction-related factors that may affect the occurrence of chemosensory dream content. Specifically, we investigated the effects of all-night exposure to an ambient odour, participants’ appraisal of their current olfactory environment, their general propensity to notice odours and act on them (i.e., odour awareness), and their olfactory acuity. Sixty pre-screened healthy young adults underwent olfactory assessment, completed a measure of odour awareness, and spent three nights in weekly intervals in a sleep laboratory. The purpose of the first visit was to adapt to the experimental setting. On the second visit, half of them were exposed to the smell of vanillin or thioglycolic acid and the other half to an odourless control condition. On the third visit, they received control or stimulation in a balanced order. On each visit, data were collected twice: once from the first rapid eye movement (REM) stage that occurred after 3 a.m., and then shortly before getting up, usually from a non-REM stage. Participants were asked to report the presence of sensory dream content and to assess their current olfactory environment. Neither exposure, nor participants’ assessments of the ambient odour, or olfactory acuity affected reports of chemosensory dream content but they were more frequent in individuals with greater odour awareness. This finding may have implications for treatment when such experiences become unwanted or bothersome.

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REM sleep dream mentation in right hemispherectomized patients

Cited by 25 publications

References 32 publications

Dream Content Analysis in Persons with an Autism Spectrum Disorder

Dream Content Analysis in Persons with an Autism Spectrum Disorder

Dream Recall Frequency in Epilepsy Patients with Partial and Generalized Seizures: A Dream Diary Study

Olfaction-Related Factors Affecting Chemosensory Dream Content in a Sleep Laboratory

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