Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions
IntroductionEveryday life requires correct processing of emotions constantly, partly occurring unconsciously. This study aims to clarify the effect of emotion perception on different event-related potentials (ERP; P100, N170). The P100 and N170 are tested for their suitability as electrophysiologica...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Behavioral Neuroscience |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnbeh.2024.1464888/full |
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| author | Lennard Herzberg Julia Schräder Julia Schräder Han-Gue Jo Ute Habel Ute Habel Lisa Wagels Lisa Wagels |
| author_facet | Lennard Herzberg Julia Schräder Julia Schräder Han-Gue Jo Ute Habel Ute Habel Lisa Wagels Lisa Wagels |
| author_sort | Lennard Herzberg |
| collection | DOAJ |
| description | IntroductionEveryday life requires correct processing of emotions constantly, partly occurring unconsciously. This study aims to clarify the effect of emotion perception on different event-related potentials (ERP; P100, N170). The P100 and N170 are tested for their suitability as electrophysiological markers in unconscious processing.MethodsUsing a modified backward masking paradigm, 52 healthy participants evaluated emotional facial expressions (happy, sad, or neutral) during EEG recording. While varying primer presentation time (16.7 ms for unconscious; 150 ms for conscious perception), either congruent or incongruent primer / target emotions were displayed.ResultsThe N170 was significantly larger in trials with conscious compared to unconscious primer presentation, while the P100 showed opposite results displaying higher amplitudes in unconscious versus conscious trials. The N170 amplitude was modulated by emotion.DiscussionBoth P100 and N170 were modulated by stimulus presentation time, demonstrating the suitability as potential biomarkers and for systematic research on conscious and unconscious face processing. |
| format | Article |
| id | doaj-art-1a47db95310e48fc8feb34f98960d533 |
| institution | Kabale University |
| issn | 1662-5153 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Behavioral Neuroscience |
| spelling | doaj-art-1a47db95310e48fc8feb34f98960d5332025-01-23T06:55:58ZengFrontiers Media S.A.Frontiers in Behavioral Neuroscience1662-51532025-01-011810.3389/fnbeh.2024.14648881464888Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressionsLennard Herzberg0Julia Schräder1Julia Schräder2Han-Gue Jo3Ute Habel4Ute Habel5Lisa Wagels6Lisa Wagels7Department of Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, RWTH Aachen, Aachen, GermanyDepartment of Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, RWTH Aachen, Aachen, GermanyInstitute of Neuroscience and Medicine, JARA-Institute Brain Structure Function Relationship (INM 10), Research Center Jülich, Jülich, GermanyDepartment of AI Convergence, College of Computer and Software, Kunsan National University, Gunsan, Republic of KoreaDepartment of Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, RWTH Aachen, Aachen, GermanyInstitute of Neuroscience and Medicine, JARA-Institute Brain Structure Function Relationship (INM 10), Research Center Jülich, Jülich, GermanyDepartment of Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, RWTH Aachen, Aachen, GermanyInstitute of Neuroscience and Medicine, JARA-Institute Brain Structure Function Relationship (INM 10), Research Center Jülich, Jülich, GermanyIntroductionEveryday life requires correct processing of emotions constantly, partly occurring unconsciously. This study aims to clarify the effect of emotion perception on different event-related potentials (ERP; P100, N170). The P100 and N170 are tested for their suitability as electrophysiological markers in unconscious processing.MethodsUsing a modified backward masking paradigm, 52 healthy participants evaluated emotional facial expressions (happy, sad, or neutral) during EEG recording. While varying primer presentation time (16.7 ms for unconscious; 150 ms for conscious perception), either congruent or incongruent primer / target emotions were displayed.ResultsThe N170 was significantly larger in trials with conscious compared to unconscious primer presentation, while the P100 showed opposite results displaying higher amplitudes in unconscious versus conscious trials. The N170 amplitude was modulated by emotion.DiscussionBoth P100 and N170 were modulated by stimulus presentation time, demonstrating the suitability as potential biomarkers and for systematic research on conscious and unconscious face processing.https://www.frontiersin.org/articles/10.3389/fnbeh.2024.1464888/fullevent-related potentialsunconsciousnessemotion processingP100N170 |
| spellingShingle | Lennard Herzberg Julia Schräder Julia Schräder Han-Gue Jo Ute Habel Ute Habel Lisa Wagels Lisa Wagels Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions Frontiers in Behavioral Neuroscience event-related potentials unconsciousness emotion processing P100 N170 |
| title | Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions |
| title_full | Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions |
| title_fullStr | Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions |
| title_full_unstemmed | Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions |
| title_short | Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions |
| title_sort | identifying p100 and n170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions |
| topic | event-related potentials unconsciousness emotion processing P100 N170 |
| url | https://www.frontiersin.org/articles/10.3389/fnbeh.2024.1464888/full |
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