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High dream recall frequency is associated with an increase of both bottom-up and top-down attentional processes. | LitMetric

High dream recall frequency is associated with an increase of both bottom-up and top-down attentional processes.

Cereb Cortex

Perception, Attention, Memory Team-Lyon Neuroscience Research Center (CRNL), INSERM U1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université de Lyon, Lyon 69000, France.

Published: August 2022

AI Article Synopsis

Article Abstract

Event-related potentials (ERPs) associated with the involuntary orientation of (bottom-up) attention toward an unexpected sound are of larger amplitude in high dream recallers (HR) than in low dream recallers (LR) during passive listening, suggesting different attentional functioning. We measured bottom-up and top-down attentional performance and their cerebral correlates in 18 HR (11 women, age = 22.7 years, dream recall frequency = 5.3 days with a dream recall per week) and 19 LR (10 women, age = 22.3, DRF = 0.2) using EEG and the Competitive Attention Task. Between-group differences were found in ERPs but not in behavior. The results show that HR present larger ERPs to distracting sounds than LR even during active listening, arguing for enhanced bottom-up processing of irrelevant sounds. HR also presented larger contingent negative variation during target expectancy and P3b to target sounds than LR, speaking for an enhanced recruitment of top-down attention. The attentional balance seems preserved in HR since their performances are not altered, but possibly at a higher resource cost. In HR, increased bottom-up processes would favor dream recall through awakening facilitation during sleep and enhanced top-down processes may foster dream recall through increased awareness and/or short-term memory stability of dream content.

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Source
http://dx.doi.org/10.1093/cercor/bhab445DOI Listing

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