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Déjà vu phenomenon-related EEG pattern. Case report.

Vlasov PN, Chervyakov AV, Gnezditskii VV - Epilepsy Behav Case Rep (2013)

Bottom Line: Déjà vu (DV, from French déjà vu - "already seen") is an aberration of psychic activity associated with transitory erroneous perception of novel circumstances, objects, or people as already known.This study aimed to record the EEG pattern of déjà vu.In patients with epilepsy, DV episodes began with polyspike activity in the right temporal lobe region and, in some cases, ended with slow-wave theta-delta activity over the right hemisphere.

View Article: PubMed Central - PubMed

Affiliation: Moscow State University of Medicine and Dentistry, Moscow, Russia.

ABSTRACT

Background: Déjà vu (DV, from French déjà vu - "already seen") is an aberration of psychic activity associated with transitory erroneous perception of novel circumstances, objects, or people as already known.

Objective: This study aimed to record the EEG pattern of déjà vu.

Methods: The subjects participated in a survey concerning déjà vu characteristics and underwent ambulatory EEG monitoring (12-16 h).

Results: In patients with epilepsy, DV episodes began with polyspike activity in the right temporal lobe region and, in some cases, ended with slow-wave theta-delta activity over the right hemisphere. There were no epileptic discharges in healthy respondents during DV.

Conclusion: Two types of déjà vu are suggested to exist: "pathological-epileptic" déjà vu, characteristic of patients with epilepsy and equivalent to an epileptic seizure, and "nonpathological-nonepileptic" déjà vu, which is characteristic of healthy people and psychological phenomenon.

No MeSH data available.


Related in: MedlinePlus

BrainLock-assisted dipole-localization of a pathologic slow-wave activity focus during a DV episode in patient D., 29 years. A — an EEG fragment; B — dipole localization with the BrainLock program. Blue dots indicate the location of activity superposed on standard template MRT scans. Distinct right-hemisphere lateralization with predominating activity in the medial right temporal lobe.
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f0025: BrainLock-assisted dipole-localization of a pathologic slow-wave activity focus during a DV episode in patient D., 29 years. A — an EEG fragment; B — dipole localization with the BrainLock program. Blue dots indicate the location of activity superposed on standard template MRT scans. Distinct right-hemisphere lateralization with predominating activity in the medial right temporal lobe.

Mentions: A dipole localization procedure using the BrainLock program localized the focus of both the initial activity and the subsequent slow-wave activity in the medial temporal lobe and the medial frontal lobe of the right hemisphere (Fig. 5). In two other ambulatory EEG records of DV episodes, the polyspike activity lasted for 8 s and also showed distinct right hemisphere lateralization, predominantly in the temporal lobe.


Déjà vu phenomenon-related EEG pattern. Case report.

Vlasov PN, Chervyakov AV, Gnezditskii VV - Epilepsy Behav Case Rep (2013)

BrainLock-assisted dipole-localization of a pathologic slow-wave activity focus during a DV episode in patient D., 29 years. A — an EEG fragment; B — dipole localization with the BrainLock program. Blue dots indicate the location of activity superposed on standard template MRT scans. Distinct right-hemisphere lateralization with predominating activity in the medial right temporal lobe.
© Copyright Policy - CC BY-NC-SA
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4150674&req=5

f0025: BrainLock-assisted dipole-localization of a pathologic slow-wave activity focus during a DV episode in patient D., 29 years. A — an EEG fragment; B — dipole localization with the BrainLock program. Blue dots indicate the location of activity superposed on standard template MRT scans. Distinct right-hemisphere lateralization with predominating activity in the medial right temporal lobe.
Mentions: A dipole localization procedure using the BrainLock program localized the focus of both the initial activity and the subsequent slow-wave activity in the medial temporal lobe and the medial frontal lobe of the right hemisphere (Fig. 5). In two other ambulatory EEG records of DV episodes, the polyspike activity lasted for 8 s and also showed distinct right hemisphere lateralization, predominantly in the temporal lobe.

Bottom Line: Déjà vu (DV, from French déjà vu - "already seen") is an aberration of psychic activity associated with transitory erroneous perception of novel circumstances, objects, or people as already known.This study aimed to record the EEG pattern of déjà vu.In patients with epilepsy, DV episodes began with polyspike activity in the right temporal lobe region and, in some cases, ended with slow-wave theta-delta activity over the right hemisphere.

View Article: PubMed Central - PubMed

Affiliation: Moscow State University of Medicine and Dentistry, Moscow, Russia.

ABSTRACT

Background: Déjà vu (DV, from French déjà vu - "already seen") is an aberration of psychic activity associated with transitory erroneous perception of novel circumstances, objects, or people as already known.

Objective: This study aimed to record the EEG pattern of déjà vu.

Methods: The subjects participated in a survey concerning déjà vu characteristics and underwent ambulatory EEG monitoring (12-16 h).

Results: In patients with epilepsy, DV episodes began with polyspike activity in the right temporal lobe region and, in some cases, ended with slow-wave theta-delta activity over the right hemisphere. There were no epileptic discharges in healthy respondents during DV.

Conclusion: Two types of déjà vu are suggested to exist: "pathological-epileptic" déjà vu, characteristic of patients with epilepsy and equivalent to an epileptic seizure, and "nonpathological-nonepileptic" déjà vu, which is characteristic of healthy people and psychological phenomenon.

No MeSH data available.


Related in: MedlinePlus