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The Behavioral and Brain Sciences Nov 2023The proposed framework can benefit from integrating predictive processing into the explanation of déjà vu which corresponds to interrupted prediction. Déjà vu is...
The proposed framework can benefit from integrating predictive processing into the explanation of déjà vu which corresponds to interrupted prediction. Déjà vu is also accompanied by familiarity. However, considerable ambiguity is inherent in familiarity, which necessitates elaboration of this construct. Research findings on involuntary autobiographical memories and déjà vu show discrepancies, and clustering these constructs can be counterproductive for research.
Topics: Humans; Recognition, Psychology; Memory, Episodic
PubMed: 37961791
DOI: 10.1017/S0140525X2300002X -
Der Anaesthesist May 2020
Topics: COVID-19; Humans; Ventilators, Mechanical
PubMed: 32328694
DOI: 10.1007/s00101-020-00782-x -
The Behavioral and Brain Sciences Sep 2022Involuntary autobiographical memories (IAMs) and déjà vu are phenomena that occur spontaneously in daily life. IAMs are recollections of the personal past, whereas...
Involuntary autobiographical memories (IAMs) and déjà vu are phenomena that occur spontaneously in daily life. IAMs are recollections of the personal past, whereas déjà vu is defined as an experience in which the person feels familiarity at the same time as knowing that the familiarity is false. We present and discuss the idea that both IAMs and déjà vu can be explained as natural phenomena resulting from memory processing and, importantly, are both based on the same memory retrieval processes. Briefly, we hypothesise that both can be described as "involuntary" or spontaneous cognitions, where IAMs deliver content and déjà vu delivers only the feeling of retrieval. We map out the similarities and differences between the two, making a theoretical and neuroscientific account for their integration into models of memory retrieval and how the autobiographical memory literature can explain these quirks of daily life and unusual but meaningful phenomena. We explain the emergence of the déjà vu phenomenon by relating it to well-known mechanisms of autobiographical memory retrieval, concluding that IAMs and déjà vu lie on a continuum.
Topics: Humans; Memory, Episodic; Deja Vu; Recognition, Psychology; Cognition
PubMed: 36111499
DOI: 10.1017/S0140525X22002035 -
Clinical Neurophysiology : Official... Apr 2022Illusions of inappropriate familiarity with the current experience or hallucinatory recall of memories are reported in temporal lobe seizures. Pathophysiological... (Review)
Review
Illusions of inappropriate familiarity with the current experience or hallucinatory recall of memories are reported in temporal lobe seizures. Pathophysiological hypotheses have been proposed, involving temporal limbic regions (Hughlings-Jackson), temporal neocortex ("interpretive cortex", Penfield), or both (Bancaud). Recent data acquired from presurgical investigations using intracerebral electrode recordings, demonstrate a critical role for the sub- and para-hippocampal cortices. From this, a novel hypothesis of cortico-limbic networks emerged: déjà-vu results from an abnormal synchronization between rhinal cortices and hippocampus, and reminiscences ("dreamy state") from activation of the associational function of the hippocampus in re-assembling elements of the past experience networks. "Experiential" phenomena are better scrutinized during direct cortical stimulation than during spontaneous occurrence, because it allows precise spatiotemporal correlations to be made between the illusion/hallucination and the electrical discharge features and localization. Therefore, we present a summary of the stimulation data published since Penfield's seminal studies, review the anatomical and physiological correlations of stimulation findings, and question their functional significance. We reappraise the distinct and coactive roles of the various regions involved in perception-memory processes including the hippocampus, rhinal cortices, temporal neocortex and constituent elements of the ventral stream. Additionally, we draw insights from what is known about the perception-cognition continuum underlying the construction of episodic memories. Finally, we compare the results from cortical stimulation in the epileptogenic zone with the use of stimulation for memory enhancement and explore what this reveals about the mechanisms of stimulation.
Topics: Deja Vu; Epilepsy, Temporal Lobe; Hallucinations; Hippocampus; Humans; Memory, Episodic; Temporal Lobe
PubMed: 35189480
DOI: 10.1016/j.clinph.2022.01.126 -
Neuroscience and Biobehavioral Reviews Dec 2023Déjà vu can be defined as conflict between a subjective evaluation of familiarity and a concurrent evaluation of novelty. Accounts of the déjà vu experience have not... (Review)
Review
Déjà vu can be defined as conflict between a subjective evaluation of familiarity and a concurrent evaluation of novelty. Accounts of the déjà vu experience have not explicitly referred to a "conflict account of déjà vu" despite the acceptance of conflict-based definitions of déjà vu and relatively recent neuroimaging work that has implicated brain areas associated with conflict as underpinning the experience. Conflict monitoring functioning follows a similar age-related trajectory to déjà vu with a peak in young adulthood and a subsequent age-related decline. In this narrative review of the literature to date, we consider how déjà vu is defined and how this has influenced the understanding of déjà vu. We also review how déjà vu can be understood within theories of recognition memory and cognitive control. Finally, we summarise the conflict account of déjà vu and propose that this account of the experience may provide a coherent explanation as to why déjà vu experiences tend to decrease with age in the non-clinical population.
Topics: Humans; Young Adult; Adult; Motivation; Recognition, Psychology; Brain; Neuroimaging
PubMed: 37979736
DOI: 10.1016/j.neubiorev.2023.105467 -
Journal of Urban Health : Bulletin of... Aug 2022
Topics: Humans; Mpox (monkeypox)
PubMed: 35916973
DOI: 10.1007/s11524-022-00671-1 -
Acta Neurologica Belgica Dec 2019It is well established that the clinical picture of dementias is not clinically homogeneous. For example, non-amnestic presentations of Alzheimer's disease have been... (Review)
Review
It is well established that the clinical picture of dementias is not clinically homogeneous. For example, non-amnestic presentations of Alzheimer's disease have been referred to as a typical variant. Careful examination of clinical characteristics contributes to understanding the neurobiology of Alzheimer's disease and other dementias and may in turn enhance knowledge of the potential risk factors involved. This study aimed at describing uncommon or bizarre symptoms/syndromes observed in patients suffering from dementia. Medline and Google scholar searches were conducted for relevant articles, chapters, and books published before 2019. Search terms used included dementia, déjà vu, zoophilia, pathological lying, and somatic symptom disorder. Publications found through this indexed search were reviewed for further relevant references. Uncommon/bizarre features of dementia were described as case reports and there were no systematic investigations.
Topics: Dementia; Humans
PubMed: 31552557
DOI: 10.1007/s13760-019-01208-1 -
Alimentary Pharmacology & Therapeutics Apr 2023
PubMed: 36952269
DOI: 10.1111/apt.17412 -
Seizure May 2024Déjà vu (DV), a French term meaning "already seen," refers to inappropriate sensation of familiarity in the present moment, as if it had been experienced before... (Review)
Review
INTRODUCTION
Déjà vu (DV), a French term meaning "already seen," refers to inappropriate sensation of familiarity in the present moment, as if it had been experienced before without a specific recollection of when or where. Traditionally, DV has been closely associated with focal seizures originating from the medial temporal lobe. However, there are occasional reports of DV occurring in idiopathic generalized epilepsies (IGEs). The objective of our study was to assess the presence and frequency of DV in individuals with IGE.
METHODS
We used the Preferred Reporting Items for Systematic Review and Meta-Analysis for protocols (PRISMA-P) and searched PubMed and Embase from January 2000 to July 2022.
RESULTS
5 studies were included with a total of 1177 IGE and 1026 with temporal lobe epilepsy (TLE) patients. The frequency of DV in IGE ranged from 0 to 11 %, and the average was 3 %, compared to 19.6 % in TLE. Broadly, 40 % of patients with IGE reported some type of aura. EEG correlation of DV in IGE was not appropriately evaluated in the studies.
CONCLUSION
Clinicians should be aware that individuals with IGE may experience DV and other types of auras. Recognizing these auras is crucial in order to avoid misdiagnosing IGE as focal epilepsy. This is important to prevent unnecessary investigations and incorrect treatment decisions.
Topics: Humans; Epilepsy, Generalized; Deja Vu
PubMed: 38640571
DOI: 10.1016/j.seizure.2024.03.015