Publications by authors named "D P Callan"
The distribution of counterions and dopants within electrically doped semicrystalline conjugated polymers, such as poly(3-hexylthiophene-2,5-diyl) (P3HT), plays a pivotal role in charge transport. The distribution of counterions in doped films of P3HT with controlled crystallinity was examined using polarized resonant soft X-ray scattering (P-RSoXS). The changes in scattering of doped P3HT films containing trifluoromethanesulfonimide (TFSI) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (FTCNQ) as counterions to the charge carriers revealed distinct differences in their nanostructure.
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- To understand brain function in real-world settings, researchers used EEG to collect data during skateboarding, tackling challenges posed by environmental noise and artifacts through techniques like ASR and ICA.
- The study employed a dual-task approach where participants received auditory stimuli while skateboarding, comparing the artifact cleaning effectiveness of various signal processing pipelines, including ASR and ICA.
- Results indicated that the ASRICA pipeline, which combines ASR and ICA, significantly outperformed minimal cleaning and other methods, especially during skateboarding, demonstrating its effectiveness in handling non-stationary artifacts.
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- * It provides tools for analyzing omics data, integrates various datasets, and features a user-friendly data mining platform, allowing easy comparisons across organisms and data types.
- * Recent updates include new data types, enhanced search features, an improved Galaxy workspace, and a redesigned MapVEu interface for analyzing spatially resolved data like vector surveillance.
There is a gap in our understanding of how best to apply transcranial direct-current stimulation (tDCS) to enhance learning in complex, realistic, and multifocus tasks such as aviation. Our goal is to assess the effects of tDCS and feedback training on task performance, brain activity, and connectivity using functional magnetic resonance imaging (fMRI). Experienced glider pilots were recruited to perform a one-day, three-run flight-simulator task involving varying difficulty conditions and a secondary auditory task, mimicking real flight requirements.
View Article and Find Full Text PDFIntroduction: The processes involved in how the attention system selectively focuses on perceptual and motor aspects related to a specific task, while suppressing features of other tasks and/or objects in the environment, are of considerable interest for cognitive neuroscience. The goal of this experiment was to investigate neural processes involved in selective attention and performance under multi-task situations. Several studies have suggested that attention-related gamma-band activity facilitates processing in task-specific modalities, while alpha-band activity inhibits processing in non-task-related modalities.
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