Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Hemispheric asymmetries play an important role in multiple cerebral functions. Asymmetries in prefrontal cortex (PFC) function have been suggested to regulate emotional processing in that right-hemispheric dominance biases towards negative affect, whereas left PFC dominance favors positive affect. This study used transcranial magnetic stimulation to test the causal role of prefrontal asymmetries in the processing of emotional stimuli. To experimentally induce hemispheric asymmetries, 21 healthy volunteers underwent two separate sessions of inhibitory continuous theta burst stimulation (cTBS) to the left versus right dorsolateral prefrontal cortex. Each stimulation was followed by magnetoencephalographic (MEG) recordings of event-related fields elicited by visually presented emotional words in a silent reading task and a subsequent behavioral emotion categorization task. The asymmetry manipulation influenced valence processing of words in early, mid-latency and late time intervals in right occipitotemporal and parietal brain regions. Left-sided cTBS (inducing right-hemispheric dominance) consistently resulted in enhanced brain responses to negative words, while right-sided cTBS (inducing left-hemispheric dominance) enhanced responses to positive words. On a behavioral level, right-hemispheric dominance resulted in more categorization matches of negative compared to positive words, while left-hemispheric dominance resulted in reverse effects. These results provide direct evidence that bottom-up valence processing is influenced by prefrontal hemispheric asymmetry.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.neuroimage.2019.01.057 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Altered Reward Processing in Obsessive-Compulsive Disorder: Insights From Active and Observational Learning.
Psychophysiology
September 2025
Department of Human Medicine, Institute for Systems Medicine, MSH Medical School Hamburg, Hamburg, Germany.
Obsessive-compulsive disorder (OCD) has been associated with altered performance monitoring, reflected in enhanced amplitudes of the error-related negativity in the event-related potential. However, this is not specific to OCD, as overactive error processing is also evident in anxiety. Although similar neural mechanisms have been proposed for error and feedback processing, it remains unclear whether the processing of errors as indexed by external feedback, reflected in the feedback-related negativity (FRN), is altered in OCD.
View Article and Find Full Text PDFResolving In Situ Exposure Dynamics in a Chemically Amplified EUV Photoresist Using Table-Top EUV Photoemission Spectroscopy.
ACS Appl Mater Interfaces
September 2025
Imec, Kapeldreef 75, 3001 Leuven, Belgium.
Extreme ultraviolet (EUV) lithography has revolutionized the high-volume manufacturing of nanoscale components. The use of EUV light leads to ionization-driven chemistry in the imaging materials of lithography, the photoresists. The complex interplay of ionization, generation of primary/secondary electrons, and the subsequent chemical mechanisms that lead to image formation in photoresists has been notoriously difficult to study.
View Article and Find Full Text PDFFree radical switching behavior between initial neutral and buffer neutral condition during Fenton-like degradation over pyrite/hematite mineral.
Environ Res
September 2025
National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China. Electronic address:
Heterogeneous Fenton-like reactions have broadened the pH adaptation window of traditional homogeneous Fenton during water purification. However, the sharp decrease in their activity under macro-neutral conditions is still a large challenge. More importantly, although it has been realized that the pH value always changes during the heterogeneous Fenton-like process, there are still a few research focuses on the degradation mechanisms in different pH systems, especially the difference between initial neutral and the buffered neutral system.
View Article and Find Full Text PDFBoron-Modified Heterointerface Boosts Kesterite Solar Cells to 0.58 V Open-Circuit Voltage.
Small
September 2025
Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences (CAS) Ningbo, Zhejiang, 315201, P. R. China.
Achieving high open-circuit voltage (V) continues to pose a significant challenge for kesterite CuZnSn(S,Se) (CZTSSe) solar cells, predominantly due to the pronounced charge carrier recombination occurring at heterointerface (HEI). To address this issue, an innovative non-metallic boron (B)-modification strategy is developed to optimize the HEI. The key advantages of this strategy are as follows: (i) Leveraging the strong bonding characteristic of B with three valence electrons, the dangling bonds on the absorber surface can be fully saturated, effectively passivating surface states without introducing new defects; (ii) Moreover, diffusion of B into the near-surface region of HEI during selenization process can create weak n-type B donor defects, which lowers the valence band maximum (VBM) of the absorber and mitigates Fermi level pinning.
View Article and Find Full Text PDFCO Adsorbates Induced Framework-Associated Low-Valence Co Sites in Co-ZSM-5 for Ethane Dehydrogenation.
J Am Chem Soc
September 2025
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Chang Ping, Beijing 102249, China.
The dynamic structural evolution of heterogeneous catalysts is a ubiquitous phenomenon that has attracted a lot of interest. Catalyst reconstruction can occur after appropriate pretreatment, resulting in more efficient active catalysts, which is an attractive but challenging issue. Here, we reveal a CO activation strategy that controls the microenvironment of the Co sites in the high-silica Co-ZSM-5 catalyst (denoted as 0.
View Article and Find Full Text PDF