Reality-monitoring errors occur when internally generated thoughts are remembered as external occurrences. We hypothesized that sleep-dependent memory consolidation could reduce them by strengthening connections between items and their contexts during an afternoon nap. Participants viewed words and imagined their referents. Pictures of the referents also accompanied half of the words. After a 2-h break filled with sleep ( = 31) or wakefulness ( = 32), participants indicated if they previously viewed a picture of each word. Nap participants made fewer reality-monitoring errors than wake participants by adopting more stringent response criteria, suggesting that sleep reduces reality-monitoring errors primarily by influencing post-retrieval decision processes.
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http://dx.doi.org/10.1101/lm.046342.118 | DOI Listing |
J Vis
May 2024
Department of Imaging Neuroscience, University College London, London, UK.
Perceptual reality monitoring refers to the ability to distinguish internally triggered imagination from externally triggered reality. Such monitoring can take place at perceptual or cognitive levels-for example, in lucid dreaming, perceptual experience feels real but is accompanied by a cognitive insight that it is not real. We recently developed a paradigm to reveal perceptual reality monitoring errors during wakefulness in the general population, showing that imagined signals can be erroneously attributed to perception during a perceptual detection task.
View Article and Find Full Text PDFConscious Cogn
October 2022
Institute of Cognitive Neuroscience, National Central University, Taiwan. Electronic address:
Dream lucidity, the awareness of consciousness in dreams, is linked to functions that support reality monitoring in differentiating between internally and externally generated memories. However, lucid dreams have been argued to result from thin reality-fantasy boundaries that lead to reality monitoring errors. To examine the relationship between dream lucidity and reality monitoring, we recruited 31 college students to rate their dream lucidity for 7 days and then complete a reality monitoring test in Experiment 1, observing a positive correlation between dream lucidity and reality monitoring.
View Article and Find Full Text PDFPsychiatry Clin Neurosci
May 2022
Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy.
Aims: Source monitoring (SM) is the metacognitive ability to determine the origin of one's experiences. SM is altered in primary psychiatric psychosis, although relationships between SM subtypes, other cognitive domains and symptoms are unclear. Our aims were to synthesize evidence comparing psychosis -with and without hallucinations- and healthy controls classifying SM subtypes by source discrimination (internal/external/reality monitoring) and stimulus modality (visual/auditory/imagined/performed).
View Article and Find Full Text PDFJ Psychiatr Brain Sci
October 2021
Department of Psychiatry, University of California, San Francisco, CA-94143, USA.
Schizophrenia is a disorder of the self. In particular, patients show cardinal deficits in self-agency (i.e.
View Article and Find Full Text PDFBiol Cybern
October 2021
ATR Brain Information Communication Research Group, Computational Neuroscience Laboratory, Hikaridai, Kyoto, 619-0288, Japan.
In several papers published in Biological Cybernetics in the 1980s and 1990s, Kawato and colleagues proposed computational models explaining how internal models are acquired in the cerebellum. These models were later supported by neurophysiological experiments using monkeys and neuroimaging experiments involving humans. These early studies influenced neuroscience from basic, sensory-motor control to higher cognitive functions.
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