Results 21 to 30 of about 16,909 (255)

On the role of theta-driven syllabic parsing in decoding speech: intelligibility of speech with a manipulated modulation spectrum

open access: yesFrontiers in Psychology, 2012
Recent hypotheses on the potential role of neuronal oscillations in speech perception propose that speech is processed on multi-scale temporal analysis windows formed by a cascade of neuronal oscillators locked to the input pseudo-rhythm.
Oded eGhitza
doaj   +1 more source

Decision Time, Slow Inhibition, and Theta Rhythm [PDF]

open access: yesThe Journal of Neuroscience, 2010
In this paper, we examine decision making in a spiking neuronal network and show that longer time constants for the inhibitory neurons can decrease the reaction times and produce theta rhythm. We analyze the mechanism and find that the spontaneous firing rate before the decision cues are applied can drift, and thereby influence the speed of the ...
Smerieri, Anteo   +2 more
openaire   +3 more sources

Speed controls the amplitude and timing of the hippocampal gamma rhythm. [PDF]

open access: yesPLoS ONE, 2011
Cortical and hippocampal gamma oscillations have been implicated in many behavioral tasks. The hippocampus is required for spatial navigation where animals run at varying speeds.
Zhiping Chen   +4 more
doaj   +1 more source

Locomotion-related oscillatory body movements at 6-12 Hz modulate the hippocampal theta rhythm.

open access: yesPLoS ONE, 2011
The hippocampal theta rhythm is required for accurate navigation and spatial memory but its relation to the dynamics of locomotion is poorly understood.
Anders Ledberg, David Robbe
doaj   +1 more source

Examining cortical tracking of the speech envelope in post-stroke aphasia

open access: yesFrontiers in Human Neuroscience, 2023
IntroductionPeople with aphasia have been shown to benefit from rhythmic elements for language production during aphasia rehabilitation. However, it is unknown whether rhythmic processing is associated with such benefits.
Yina M. Quique   +6 more
doaj   +1 more source

Coherent theta activity in the medial and orbital frontal cortices encodes reward value

open access: yeseLife, 2021
This study examined how the medial frontal (MFC) and orbital frontal (OFC) cortices process reward information. We simultaneously recorded local field potentials in the two areas as rats consumed liquid sucrose rewards.
Linda M Amarante, Mark Laubach
doaj   +1 more source

Computational study of hippocampal-septal theta rhythm changes due to β-amyloid-altered ionic channels. [PDF]

open access: yesPLoS ONE, 2011
Electroencephagraphy (EEG) of many dementia patients has been characterized by an increase in low frequency field potential oscillations. One of the characteristics of early stage Alzheimer's disease (AD) is an increase in theta band power (4-7 Hz ...
Xin Zou   +3 more
doaj   +1 more source

Enhancement of encoding and retrieval functions through theta phase-specific manipulation of hippocampus

open access: yeseLife, 2014
Assessing the behavioral relevance of the hippocampal theta rhythm has proven difficult, due to a shortage of experiments that selectively manipulate phase-specific information processing.
Joshua H Siegle, Matthew A Wilson
doaj   +1 more source

Movement-related theta rhythm in humans: coordinating self-directed hippocampal learning.

open access: yesPLoS Biology, 2012
The hippocampus is crucial for episodic or declarative memory and the theta rhythm has been implicated in mnemonic processing, but the functional contribution of theta to memory remains the subject of intense speculation.
Raphael Kaplan   +6 more
doaj   +1 more source

EEG cortical network reveals the temporo-spatial mechanism of visual search

open access: yesBrain Research Bulletin, 2023
This study aims to explore a method based on brain networks for implicit attention by using wavelet coherence as feature to identify individual targets in the visual field, find the optimal classification rhythm and time window, and investigate the ...
Rui Qiao, Haiyong Zhang, Yin Tian
doaj   +1 more source

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