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Nonlinear EEG parameters of emotional perception in patients with moderate traumatic brain injury, coma, stroke and schizophrenia.


ABSTRACT:

Objective

The aim of this study was to determine the EEG changes induced by emotional non-verbal sounds using nonlinear signals' features and also to examine the subjective emotional response in patients with different neurological and psychiatric disorders.

Methods

141 subjects participated in our study: patients after moderate TBI, patients in acute coma, patients after stroke, patients with schizophrenia and controls. 7 types of emotionally charged stimuli were presented. Non-comatose participants were asked to assess the levels of experienced emotions. We analyzed fractal dimension, signal's envelope parameters and Hjorth mobility and complexity.

Results

The Hjorth parameters were negatively correlated with irritation. The fractal dimension was positively correlated with arousal and empathy levels. The only presentation of laughter to post-stroke patients induced the reaction similar to the control group.

Conclusions

The results showed that the investigated nonlinear features of resting state EEG are quite group-specific and also specific to the emotional state.

Significance

The investigated features could serve to diagnose emotional impairments.

SUBMITTER: Portnova GV 

PROVIDER: S-EPMC7179336 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Nonlinear EEG parameters of emotional perception in patients with moderate traumatic brain injury, coma, stroke and schizophrenia.

Portnova Galina V GV   Atanov Michael S MS  

AIMS neuroscience 20181107 4


<h4>Objective</h4>The aim of this study was to determine the EEG changes induced by emotional non-verbal sounds using nonlinear signals' features and also to examine the subjective emotional response in patients with different neurological and psychiatric disorders.<h4>Methods</h4>141 subjects participated in our study: patients after moderate TBI, patients in acute coma, patients after stroke, patients with schizophrenia and controls. 7 types of emotionally charged stimuli were presented. Non-c  ...[more]

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