1. On the effect of word repetition on N170 event-related potential amplitude: Influence of stimulus duration and interstimulus interval
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Rüsseler, Jascha and Arendt, Denise
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FOS: Psychology ,Neuroscience and Neurobiology ,N170 ,Cognitive Neuroscience ,neural adaptation ,Psychology ,Life Sciences ,repetition suppression ,Social and Behavioral Sciences ,event-related potentials ,ERP ,words - Abstract
We investigate repetition suppression (RS) for German words and faces using an adaptor-level-design with varying durations. We aim to investigate: (1) whether RS exists for German words, (2) how intensely RS arises with respect to the S1 presentation duration and (3) how fast RS recovers with respect to the duration of the ISI. RS refers to decreased neural responses following stimulus repetition (Grill-Spector et al., 2006). RS has been demonstrated for faces by examining the ERP component N170. This component is characterized by a peak latency of 160-170 ms after presentation of a stimulus, an occipito-temporal topography and a larger amplitude after the presentation of faces compared to other objects. However, the N170 was also observed for words, letters or character strings. Although there are some findings for RS to letters and Chinese characters, RS has not been shown for German words yet. Inconsistent findings in RS research could be based on the use of different experimental designs. Whereas in some studies researchers used block designs with repeated stimuli, in other studies adapter-level-designs with many sets of stimuli were used. In adaptor-level-designs a first stimulus (S1) is presented, followed by an interstimulus interval (ISI), a second stimulus (S2) and an intertrial interval (ITI). The two stimuli are either of the same category (e.g. word – word) or of a different category (e.g. word – face). We use such an adaptor-level-design with different durations for S1-presentation and ISI as done by Feuerriegel et al. (2015) with face and word stimuli.
- Published
- 2023
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