“
“Relatively less right parietal activity may reflect Quizartinib reduced arousal and signify risk for major depressive disorder (MDD). Inconsistent

findings with parietal electroencephalographic (EEG) asymmetry, however, suggest issues such as anxiety comorbidity and sex differences have yet to be resolved. Resting parietal EEG asymmetry was assessed in 306 individuals (31% male) with (n = 143) and without (n = 163) a DSM-IV diagnosis of lifetime MDD and no comorbid anxiety disorders. Past MDD+ women displayed relatively less right parietal activity than current MDD+ and MDD- women, replicating prior work. Recent caffeine intake, an index of arousal, moderated the relationship between depression and EEG asymmetry for women and men. Findings suggest that sex differences and arousal should be examined in studies of depression and regional brain activity.”
“A means of accounting for ocular artifact in the electroencephalograph (EEG) is to subtract portions (Bs) of ocular voltage measured by the electrooculograph (EOG) from the Nirogacestat nmr EEG. Some such EOG correction methods calculate Bs at

one time and use these to correct data recorded at a different time; these require information about the temporal stability of the Bs. This study investigated the stability of Bs over a 2-hr EEG recording session. Participants performed 5 eye movement tasks, each separated by 30 min. Four EOG correction methods were then used to calculate Bs from each of the 5 data sets, resulting in VEOG, HEOG, and REOG (where appropriate) Bs for each methods at each of the 5 time points. We did not find evidence that Bs changed over the Rabusertib 2-hr period, nor of any difference in temporal stability between the methods. This study suggests that it is appropriate to employ Bs calculated from calibration trials to correct data recorded within at least a 2-hr time window.”
“The cognitive system is able to reconfigure

mental resources flexibly to adapt to new a task. While task-set switching is known to be detrimental to behavioral performance, less is known about the precise loci of these effects on stimulus processing. We measured event-related potentials to explore the neural consequences of task-set switching on semantic processing. We examined the context-sensitive N400 component evoked by the second of two target words embedded in a rapid serial visual presentation under conditions that involved either a task-set switch or no switching. Whereas the N400 was unaffected by the lag separating the targets in the absence of switching, it was delayed and attenuated in the switch condition when the targets were adjacent in the sequence. These findings indicate that task-set reconfiguration temporarily prevents semantic activation and provide evidence for the nonautomaticity of semantic processing of words.”
“Viewing a series of aversive pictures prompts emotional reactivity reflecting sustained defensive engagement.