【摘 要】
：
Objective EEG default mode network (DMN) at rest was reported with specific regional spectral field powers (Chen et al., Neuroimage 2008).This study was aimed at determining the effects of respective
【机 构】
：
Center for Higher Brain Functions, Capital Medical University, Beijing 100069, China
【出 处】
：
中国神经科学学会第九届全国学术会议暨第五届会员代表大会
论文部分内容阅读
Objective EEG default mode network (DMN) at rest was reported with specific regional spectral field powers (Chen et al., Neuroimage 2008).This study was aimed at determining the effects of respective light and dark condition on EEG DMN.Methods Subjects were healthy young adults, aged 20-26 yrs, recorded with 128-ch EEG in 4 respective sessions: Eyes-open with strong light (EO/sl), eyes-open with complete dark (EO/cd), eyes-closed with strong light (EC/sl), and eyes-closed with complete dark (EC/cd).The spectral EEG of 7 broad-bands were quantified in regional field power at each ROI.Analysis was conducted in Two Way RM ANOVA.Results All band powers, except alpha-1 and alpha-2, showed no significant effects.In alpha-1 of anterior and parietal region, EO was much less than EC (F=7.88, P<0,0015) and Complete Dark was much higher than Strong Light condition (F=8.39, P<0.012).In alpha-2 of post-parietal region, there was an interaction effect (F=5.25, P<0.039).The Strong Light induced much less power than Complete Dark in EO condition, but no change in EC condition.Conclusion EO modulates alpha-1 and alpha-2 EEG powers than those in EC state.Even under Complete Dark condition, EO modulates the alpha-1 and alpha-2 powers.Thus, light has much less to do with the EEG alpha effect than the motor act of EO from EC.Significance This study poses an interesting question on the EEG DMN of blind person.Our theory would predict higher alpha powers in blind persons than those in sighted persons.
其他文献
NMDA-receptor dependent, TTX-resistant membrane potential oscillations are considered to be important for the operation of the lamprey locomotor network.They involve a cyclic influx of calcium, leadin
Spreading depression (SD) is a temporary disruption of local ionic homeostasis that propagates slowly across the cortex.Spreading depolarisation associated with SD occurs in different types of stroke
The entorhinal cortex (EC) has long been regarded as a bidirectional gateway between higher cortical areas and the hippocampus.Orexins (hypocretins) are wake-promoting neuropeptides which are mainly p
Objective The medial prefrontal cortex (mPFC) and dorsal hippocampus (DHC) play significant roles in stimulant-induced neurobehavioral effects.In order to investigate the role of mPFC and DHC in metha
Objective We have compared saccadic eye movements between major depressed and normal people to find out characteristics of eye movements in depressed people.Methods Depressed and normal subjects watch
Objective Pattern completion, the ability to retrieve complete memories initiated by partial cues, is a critical feature of the memory.Present study investigates the role of dopamine in memory recall.
Dopamine (DA) is critically involved in regulating processes responsible for the generation of complex movements and emotions, cognition, reward processing, and drug addiction.In contrast, the role as
Neuromedin U (NMU) has recently been reported to play a role in nociception.However, to date, the relevant mechanisms still remain unknown.In the present study, we investigated the expression profile
Objective It has been suggested that the anterior cingulate cortex (ACC) and prelimbic cortex (PL) of medial prefrontal cortex (mPFC) have critical roles in the acquisition and retrieval (expression)
Objective Integration of local image components into global shapes is crucial for perceiving coherent objects in visual scenes.Previous studies indicate that V1 is involved in mediating contour integr