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The Behavioral and ERP Responses to Self- and Other- Referenced Adjectives
Alexander Savostyanov1,2,3, Andrey Bocharov1,3, Tatiana Astakhova3
1Laboratory of Differential Psychophysiology, State-Research Institute of Physiology and Basic Medicine, 630117 Novosibirsk, Russia.
Processing self-related emotional words involves distinct brain activity. Self-attributions of positive adjectives showed unique event-related potential (ERP) patterns, differing from attributions to others.
Area of Science:
- Cognitive Neuroscience
- Psychology
- Neuroimaging
Background:
- Understanding how the brain processes self-referential information is crucial for cognitive psychology.
- Emotional appraisal vocabulary significantly influences cognitive processing and social cognition.
- Event-related potentials (ERPs) offer insights into the temporal dynamics of brain responses to stimuli.
Purpose of the Study:
- To investigate behavioral and event-related potential (ERP) responses to personalized emotional appraisal vocabulary.
- To examine how attributing emotional words to oneself versus others affects cognitive processing.
- To explore the neural correlates of self-relatedness and emotional valence in word processing.
Main Methods:
- Healthy participants performed an adjective attribution task involving self, loved, neutral, and unpleasant persons.
- Behavioral data (reaction times) and electroencephalography (EEG) were recorded.
- Analysis focused on event-related potentials (ERPs), specifically N400, P300, and P600 components.
Main Results:
- Shorter reaction times were observed when attributing adjectives to oneself and loved ones compared to neutral or unpleasant persons.
- Self-related adjectives elicited larger N400 amplitudes in medial cortical areas than other-related adjectives.
- N400 amplitude was maximal for self-attributed positive adjectives, indicating an interaction between self-referential processing and emotional valence.
Conclusions:
- Emotional valence and self-referential processing engage distinct neural mechanisms.
- Brain processes underlying the processing of self versus other information differ in cortical localization and temporal dynamics.
- The findings support the hypothesis that personalized attribution and emotional valence modulate neural responses.
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