Reduced repetition suppression in the occipital visual cortex during repeated negative Chinese personality‐trait word processing

Abstract

Reduced neural activation have been consistently observed during repeated items processing, a phenomenon termed repetition suppression. The present study used functional magnetic resonance imaging (fMRI) to investigate whether and how stimuli of emotional valence affects repetition suppression by adopting Chinese personality-trait words as materials. Seventeen participants were required to read the negative and neutral Chinese personality-trait words silently. And then they were presented with repeated and novel items during scanning. Results showed significant repetition suppression in the inferior occipital gyrus only for neutral personality-trait words, whereas similar repetition suppression in the left inferior temporal gyrus and left middle temporal gyrus was revealed for both the word types. These results indicated common and distinct neural substrates during processing Chinese repeated negative and neutral personality-trait words.

Episodic Memory Encoding and Retrieval in Face-Name Paired Paradigm: An fNIRS Study

“…In the present study, the repeated pairs generated lower activation in the occipital cortex, compared to the novel pairs. This result is in agreement with the findings of a previous f MRI study observing that the repetition of items suppressed the occipital visual cortex activity [ 58 , 59 ]. It is reported that such repetition suppression arises from stimulus-specific expectations.…”

Duration compression induced by visual and phonological repetition of Chinese characters

“…Research has shown that phonological or semantic repetition can facilitate cognitive processes of Chinese characters in various tasks, such as identification, categorization, lexical decision, and naming task (Neely, 1991;Perfetti & Liu, 2006). The facilitation by phonological or semantic repetition is correlated with reduced neural activities (Qiao, Zheng, Li, Zhu, & Wang, 2014;Schacter, Wig, & Stevens, 2007;Sekiguchi, Koyama, & Kakigi, 2000;Takahiro, Sachiko, & Ryusuke, 2004;Wheatley, Weisberg, Beauchamp, & Martin, 2005). Similar neural repetition suppression has been proposed to explain the temporal repetition compression (Matthews & Gheorghiu, 2016;Pariyadath & Eagleman, 2007).…”

Altered dynamic amplitude of low-frequency fluctuations in patients with postpartum depression

“…Functional magnetic resonance imaging (fMRI) has presented a tool for uncovering the underlying brain mechanisms for emotion processing, and previous studies found some emotion-related speci c brain site (Susanne et al, 2019). For example, the amygdala is implicated in fear (Nigel et al, 2021); the cingulate cortex (ACC) involves sadness (P et al, 2018); the inferior temporal gyrus and middle frontal gyrus respond to negative stimuli (Qiao et al, 2014). Although these results were not fully consistent in functional localization between different fMRI, the emotion processing is distributed in distinct brain regions (Simeng et al, 2019).…”