Subjects: Psychology >> Cognitive Psychology submitted time 2023-04-12
Abstract： Owing to its advantages in time resolution, electroencephalography (EEG) provides an important basis for studying the dynamic cognitive process of the human brain. To explore the electrophysiological mechanism of psychological processes, scalp EEG must have good test-retest reliability. Most studies explore the reliability of the resting-state EEG (rsEEG) or event-related potentials (ERP), lacking a comprehensive comparison of multiple states. We comprehensively compared the test-retest reliability of the two rsEEG with eyes-open (EO) and eyes-close (EC) states, and the ERPs of PVT and oddball tasks, from frequency, time, and spatial domains to identify more widely applicable indicators. A total of 42 healthy adults (age range = 18–26 years old; mean = 19.5 ± 1.4 years old; 14 males) underwent all three EEG recording sessions, including the present (Session 1), 90 mins later (Session 2), and one month later (Session 3). During each EEG recording session, all the participants completed the same five states including two resting states (eyes-open, eyes-closed, each with 5 minutes) and two task states (PVT and oddball task). Intra-class correlation coefficients (ICC) were computed to assess the test-retest reproducibility of the five states. This study compares and analyses the test-retest reliability of two resting-state and three task-state EEG from the perspectives of time, frequency, and spatial domains. Results revealed the following: (1) The test-retest reliability of rsEEG was generally better than that of ERP. (2) For rsEEG, the test-retest reliability of the EC resting-state was higher than that of the EO, with the ICC median value of approximately 0.6. Furthermore, the test-retest reliability of the alpha band was the highest in all frequency bands. (3) For the two task-states ERP, the overall ICC of the PVT paradigm was higher than that of the oddball paradigm, and the test-retest reliability was highest at about 200 ms after the stimulus onsets. (4) In the spatial domain, the test-retest reliability is higher in the central region than in the peripheral region, which may be related to the signal-to-noise ratio (SNR). Our research involves multiple resting-state and task-state experiments. Based on the characteristics of frequency, time, and space domains, we comprehensively compared the optimal retest characteristics of multiple EEG and suggest the possible reasons. Some suggestions for the selection of appropriate experimental paradigms and indicators for the follow-up study of EEG test-retest reliability are provided and guide the application of EEG in the basic and clinical field.
Subjects: Psychology >> Developmental Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： Insomnia has high incidence in modern society. The resting-state functional magnetic resonance (rs-fMRI) becomes one of the main imaging methods for the neuroimaging studies of insomnia, with its convenience and non-intrusive during data recording. Recent rs-fMRI studies showed that patients with insomnia had abnormalities in the prefrontal lobe, the temporal lobe, anterior cingulate gyrus and insula. Large-scale brain network is a brain structure that contains multiple brain regions and has relatively unique cognitive function. Based on the perspective of large-scale brain networks, patients with insomnia had abnormal activities and connectivities within the default network, the salience network, the cognitive control network and the negative affect network. More important, growing evidence presented an altered connectivities pattern among these four large-scale brain networks. Based on the symptoms, therapy, and the patterns of the large-scale brain networks, we proposed a "precision treatment" approach for insomnia. Future researches could integrate the big data with multimodal neuroimaging technology to verify the findings of rs-fMRI. Moreover, longitudinal and sequential design of insomnia can further benefit for the understanding of the neural mechanisms of insomnia.
Subjects: Psychology >> Cognitive Psychology submitted time 2017-12-29
Abstract： Numerous evidence has indicated that the high-level cognitive functions are not carried out by isolated operation of single brain area, but through the dynamic interactions between multiple large-scale brain networks. Among them, frontoparietal control network plays a pivotal gate-keeping role in goal-directed cognition, modulating the dynamic balance between the dorsal attention network and default network. Dorsal attention network is mainly responsible for the external top-down attention-oriented and visual space perception. The default network is considered to support internally oriented and self-referential mental processes. By selectively cooperating with the default network or dorsal attention network according to the attentional demands of the task, the frontoparietal control network may serve as a cortical mediator linking the two networks to support adaptive cognitive processes. Regarding these three large-scale brain networks, there are still some debates in the nodes (regions), the functional characterization and interactive relationship. Future research needs to further explore the functional roles of the subsystems within each network, and use the effective connectivity method to examine the direction and dynamics of the information transmission within and between networks.
Peer Review Status:
Awaiting Review
Hits
YES
Hits
Downloads
Comment