| BOB, Petr, Marek ŠUSTA, Alica GREGUŠOVÁ a Denisa JAŠOVÁ. Dissociation, cognitive conflict and nonlinear patterns of heart rate dynamics in patients with unipolar depression. Progress in Neuro-Psychopharmacology & Biological Psychiatry. USA, 2009, roč. 33, č. 1, s. 141-145. ISSN 0278-5846. Dostupné z: https://dx.doi.org/10.1016/j.pnpbp.2008.11.005. |
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@article{866458,
author = {Bob, Petr and Šusta, Marek and Gregušová, Alica and Jašová, Denisa},
article_location = {USA},
article_number = {1},
doi = {http://dx.doi.org/10.1016/j.pnpbp.2008.11.005},
keywords = {Chaos; cognitive conflict; dissociation; ECG; Lyapunov exponent; stress},
language = {eng},
issn = {0278-5846},
journal = {Progress in Neuro-Psychopharmacology & Biological Psychiatry},
title = {Dissociation, cognitive conflict and nonlinear patterns of heart rate dynamics in patients with unipolar depression},
volume = {33},
year = {2009}
}
TY - JOUR
ID - 866458
AU - Bob, Petr - Šusta, Marek - Gregušová, Alica - Jašová, Denisa
PY - 2009
TI - Dissociation, cognitive conflict and nonlinear patterns of heart rate dynamics in patients with unipolar depression
JF - Progress in Neuro-Psychopharmacology & Biological Psychiatry
VL - 33
IS - 1
SP - 141-145
EP - 141-145
SN - 02785846
KW - Chaos
KW - cognitive conflict
KW - dissociation
KW - ECG
KW - Lyapunov exponent
KW - stress
N2 - Recent findings in cognitive neuroscience indicate that activation of anterior cingulate cortex (ACC) is related to detecting cognitive conflict. Conflict related ACC activation elicits responses in central autonomic network which can be assessed by psychophysiological measures such as heart rate variability (i.e. beat to beat R-R intervals - RRI). Recent findings in neuroscience also suggest that cognitive conflict is related to specific nonlinear chaotic changes of the signal generated by the neural systems. The present study used Stroop word-colour test as an experimental approach to the study of cognitive conflict in connection with RRI measurement, psychometric measurement of dissociation (DES) and calculation of largest Lyapunov exponents in nonlinear data analysis of RRI time series in 40 patients with unipolar depression and 35 healthy controls. Significant correlation 0.58 (p < 0.01) between largest Lyapunov exponents and DES found in depressive patients indicate that cognitive conflict related neural interference during conflicting Stroop task is closely related to dissociative processes. These results present first supportive evidence that degree of chaos could be related to dissociation.
ER -
BOB, Petr, Marek ŠUSTA, Alica GREGUŠOVÁ a Denisa JAŠOVÁ. Dissociation, cognitive conflict and nonlinear patterns of heart rate dynamics in patients with unipolar depression. \textit{Progress in Neuro-Psychopharmacology \&{} Biological Psychiatry}. USA, 2009, roč.~33, č.~1, s.~141-145. ISSN~0278-5846. Dostupné z: https://dx.doi.org/10.1016/j.pnpbp.2008.11.005.
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