Visual sensory discrimination of threatening stimuli presenting different durations: A magnetoencephalographic and behavioral study
Whether time exposure influences visual sensory processing of emotional stimulation is an unexplored issue, despite its relevance to understanding affective processing. We recorded magnetoencephalographic (MEG) activity -concretely event-related magnetic fields (ERFs)- from 25 participants while att...
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Elsevier
2025-04-01
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| Series: | NeuroImage |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1053811925001600 |
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| author | Luis Carretié Javier Echegaray Constantino Méndez-Bértolo |
| author_facet | Luis Carretié Javier Echegaray Constantino Méndez-Bértolo |
| author_sort | Luis Carretié |
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| description | Whether time exposure influences visual sensory processing of emotional stimulation is an unexplored issue, despite its relevance to understanding affective processing. We recorded magnetoencephalographic (MEG) activity -concretely event-related magnetic fields (ERFs)- from 25 participants while attending to spiders (emotional stimuli) and wheels (neutral) silhouettes they had to categorize. These stimuli were presented during 33.33, 66.66, 133.33, and 266.66 ms, and could appear at the center of the screen (fixation) or in the lower visual field (periphery). Behavioral performance revealed improved detection of negative emotional stimuli at fixation, and this effect did not interact with exposure time. At the neural level, greater amplitudes for spiders than for wheels were observed when presented at fixation in two visual ERF components, M100 and M150, an effect originating in striate and extrastriate visual cortices, respectively. This effect, ocurring later for stimuli presented at the periphery (M210, estimated in the extrastriate cortex), neither interacted with stimulus duration. This threat detection mechanism in the visual cortex independent of stimulus duration points to an all-or-nothing, rather than gradual, sensory discrimination of emotional cues regarding their exposure time. |
| format | Article |
| id | doaj-art-e7ae0945d8e34dee94320ed537ff3efd |
| institution | OA Journals |
| issn | 1095-9572 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
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| series | NeuroImage |
| spelling | doaj-art-e7ae0945d8e34dee94320ed537ff3efd2025-08-20T02:07:57ZengElsevierNeuroImage1095-95722025-04-0131012115810.1016/j.neuroimage.2025.121158Visual sensory discrimination of threatening stimuli presenting different durations: A magnetoencephalographic and behavioral studyLuis Carretié0Javier Echegaray1Constantino Méndez-Bértolo2Corresponding autor at: Facultad de Psicología, Universidad Autónoma de Madrid, 28049 Madrid, Spain; Facultad de Psicología, Universidad Autónoma de Madrid, 28049 Madrid, SpainWilhelm Wundt Institute for Psychology, University of Leipzig, 04103 Leipzig, GermanyDepartamento de Psicología. Facultad de Ciencias de la Educación, Universidad de Cádiz, 11519 Cádiz, Spain; Instituto de Investigación Biomédica de Cádiz (INIBICA), Hospital Universitario Puerta del Mar, 11009 Cádiz, SpainWhether time exposure influences visual sensory processing of emotional stimulation is an unexplored issue, despite its relevance to understanding affective processing. We recorded magnetoencephalographic (MEG) activity -concretely event-related magnetic fields (ERFs)- from 25 participants while attending to spiders (emotional stimuli) and wheels (neutral) silhouettes they had to categorize. These stimuli were presented during 33.33, 66.66, 133.33, and 266.66 ms, and could appear at the center of the screen (fixation) or in the lower visual field (periphery). Behavioral performance revealed improved detection of negative emotional stimuli at fixation, and this effect did not interact with exposure time. At the neural level, greater amplitudes for spiders than for wheels were observed when presented at fixation in two visual ERF components, M100 and M150, an effect originating in striate and extrastriate visual cortices, respectively. This effect, ocurring later for stimuli presented at the periphery (M210, estimated in the extrastriate cortex), neither interacted with stimulus duration. This threat detection mechanism in the visual cortex independent of stimulus duration points to an all-or-nothing, rather than gradual, sensory discrimination of emotional cues regarding their exposure time.http://www.sciencedirect.com/science/article/pii/S1053811925001600EmotionSensory processingVisual cortexMagnetoencephalographyStimulus duration |
| spellingShingle | Luis Carretié Javier Echegaray Constantino Méndez-Bértolo Visual sensory discrimination of threatening stimuli presenting different durations: A magnetoencephalographic and behavioral study NeuroImage Emotion Sensory processing Visual cortex Magnetoencephalography Stimulus duration |
| title | Visual sensory discrimination of threatening stimuli presenting different durations: A magnetoencephalographic and behavioral study |
| title_full | Visual sensory discrimination of threatening stimuli presenting different durations: A magnetoencephalographic and behavioral study |
| title_fullStr | Visual sensory discrimination of threatening stimuli presenting different durations: A magnetoencephalographic and behavioral study |
| title_full_unstemmed | Visual sensory discrimination of threatening stimuli presenting different durations: A magnetoencephalographic and behavioral study |
| title_short | Visual sensory discrimination of threatening stimuli presenting different durations: A magnetoencephalographic and behavioral study |
| title_sort | visual sensory discrimination of threatening stimuli presenting different durations a magnetoencephalographic and behavioral study |
| topic | Emotion Sensory processing Visual cortex Magnetoencephalography Stimulus duration |
| url | http://www.sciencedirect.com/science/article/pii/S1053811925001600 |
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