نتایج جستجو برای: smallsignal oscillations

تعداد نتایج: 48083  

2015
Benedikt Zoefel Rufin VanRullen

Constantly bombarded with input, the brain has the need to filter out relevant information while ignoring the irrelevant rest. A powerful tool may be represented by neural oscillations which entrain their high-excitability phase to important input while their low-excitability phase attenuates irrelevant information. Indeed, the alignment between brain oscillations and speech improves intelligib...

Journal: :Psychophysiology 2014
Michael J Minzenberg Glenn C Gomes Jong H Yoon Andrew J Watrous Joy Geng Alana J Firl Cameron S Carter

Control-related cognitive processes are associated with cortical oscillations and modulated by catecholamine neurotransmitters. It remains unclear how catecholamine systems modulate control-related oscillations. We tested modafinil effects on rule-related 4-30 Hz oscillations, with double-blind, placebo-controlled (within-subjects) testing of 22 healthy adults, using EEG during cognitive contro...

Journal: :The Journal of infectious diseases 2014
Nicholas X Tan Grace X Tan Li-Gang Yang Bin Yang Kimberly A Powers Michael E Emch Joseph D Tucker

The high burden of syphilis in China presents a unique opportunity to examine temporal trends. This study used wavelet transformation and Fourier analysis to assess the presence of temporal oscillations in the incidence of syphilis among adults, gonorrhea, and congenital syphilis over 11 years in China's largest province. This study found a significant annual oscillation trend in the incidence ...

2014
Maria Botcharova Simon F. Farmer Luc Berthouze

The concept of the brain as a critical dynamical system is very attractive because systems close to criticality are thought to maximize their dynamic range of information processing and communication. To date, there have been two key experimental observations in support of this hypothesis: (i) neuronal avalanches with power law distribution of size and (ii) long-range temporal correlations (LRT...

2014
Joachim Gross

Brain oscillations are increasingly the subject of electrophysiological studies probing their role in the functioning and dysfunction of the human brain. In recent years this research area has seen rapid and significant changes in the experimental approaches and analysis methods. This article reviews these developments and provides a structured overview of experimental approaches, spectral anal...

Journal: :Trends in cognitive sciences 2015
Michael S Clayton Nick Yeung Roi Cohen Kadosh

We rely on sustained attention to protect task performance against fatigue and distraction. Time-related variations in attention correlate with amplitude changes of specific cortical oscillations. However, the ways in which these oscillations might support sustained attention, how these oscillations are controlled, and the extent to which they influence one another remain unclear. We address th...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Robert B Yaffe Matthew S D Kerr Srikanth Damera Sridevi V Sarma Sara K Inati Kareem A Zaghloul

Reinstatement of neural activity is hypothesized to underlie our ability to mentally travel back in time to recover the context of a previous experience. We used intracranial recordings to directly examine the precise spatiotemporal extent of neural reinstatement as 32 participants with electrodes placed for seizure monitoring performed a paired-associates episodic verbal memory task. By cueing...

2009
Michael X Cohen Simon van Gaal K. Richard Ridderinkhof Victor A. F. Lamme

The medial prefrontal cortex (MFC) is critical for our ability to learn from previous mistakes. Here we provide evidence that neurophysiological oscillatory long-range synchrony is a mechanism of post-error adaptation that occurs even without conscious awareness of the error. During a visually signaled Go/No-Go task in which half of the No-Go cues were masked and thus not consciously perceived,...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Yohsuke Bansho Taro Furubayashi Norikazu Ichihashi Tetsuya Yomo

To date, various cellular functions have been reconstituted in vitro such as self-replication systems using DNA, RNA, and proteins. The next important challenges include the reconstitution of the interactive networks of self-replicating species and investigating how such interactions generate complex ecological behaviors observed in nature. Here, we synthesized a simple replication system compo...

2016
Benjamin Voloh Thilo Womelsdorf

Short periods of oscillatory activation are ubiquitous signatures of neural circuits. A broad range of studies documents not only their circuit origins, but also a fundamental role for oscillatory activity in coordinating information transfer during goal directed behavior. Recent studies suggest that resetting the phase of ongoing oscillatory activity to endogenous or exogenous cues facilitates...

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