scholarly journals Stimulus sequence context differentially modulates inhibition-related theta and delta band activity in a go/no-go task

2016 ◽  
Vol 53 (5) ◽  
pp. 712-722 ◽  
Author(s):  
Jeremy Harper ◽  
Stephen M. Malone ◽  
Matthew D. Bachman ◽  
Edward M. Bernat
Keyword(s):  
Stimulus Sequence ◽  
Sequence Context ◽  
Delta Band ◽  
Band Activity

scholarly journals Delta band activity contributes to the identification of command following in disorder of consciousness

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Gonzalo Rivera-Lillo ◽  
Emmanuel A. Stamatakis ◽  
Tristan A. Bekinschtein ◽  
David K. Menon ◽  
Srivas Chennu
Keyword(s):  
Functional Neuroimaging ◽  
Brain Activity ◽  
Disorder Of Consciousness ◽  
Fine Grained ◽  
Electrical Brain Activity ◽  
Delta Band ◽  
Delta Modulation ◽  
Command Following ◽  
Band Activity

AbstractThe overt or covert ability to follow commands in patients with disorders of consciousness is considered a sign of awareness and has recently been defined as cortically mediated behaviour. Despite its clinical relevance, the brain signatures of the perceptual processing supporting command following have been elusive. This multimodal study investigates the temporal spectral pattern of electrical brain activity to identify features that differentiated healthy controls from patients both able and unable to follow commands. We combined evidence from behavioural assessment, functional neuroimaging during mental imagery and high-density electroencephalography collected during auditory prediction, from 21 patients and 10 controls. We used a penalised regression model to identify command following using features from electroencephalography. We identified seven well-defined spatiotemporal signatures in the delta, theta and alpha bands that together contribute to identify DoC subjects with and without the ability to follow command, and further distinguished these groups of patients from controls. A fine-grained analysis of these seven signatures enabled us to determine that increased delta modulation at the frontal sensors was the main feature in command following patients. In contrast, higher frequency theta and alpha modulations differentiated controls from both groups of patients. Our findings highlight a key role of spatiotemporally specific delta modulation in supporting cortically mediated behaviour including the ability to follow command. However, patients able to follow commands nevertheless have marked differences in brain activity in comparison with healthy volunteers.

scholarly journals Closing the loop on impulsivity via nucleus accumbens delta-band activity in mice and man

2017 ◽  
Vol 115 (1) ◽  
pp. 192-197 ◽  
Author(s):  
Hemmings Wu ◽  
Kai J. Miller ◽  
Zack Blumenfeld ◽  
Nolan R. Williams ◽  
Vinod K. Ravikumar ◽  
...  
Keyword(s):  
Nucleus Accumbens ◽  
Unmet Need ◽  
Consummatory Behavior ◽  
Field Potentials ◽  
Palatable Food ◽  
Neural Signals ◽  
Reward Anticipation ◽  
Delta Band ◽  
Closing The Loop ◽  
Band Activity

Reward hypersensitization is a common feature of neuropsychiatric disorders, manifesting as impulsivity for anticipated incentives. Temporally specific changes in activity within the nucleus accumbens (NAc), which occur during anticipatory periods preceding consummatory behavior, represent a critical opportunity for intervention. However, no available therapy is capable of automatically sensing and therapeutically responding to this vulnerable moment in time when anticipation-related neural signals may be present. To identify translatable biomarkers for an off-the-shelf responsive neurostimulation system, we record local field potentials from the NAc of mice and a human anticipating conventional rewards. We find increased power in 1- to 4-Hz oscillations predominate during reward anticipation, which can effectively trigger neurostimulation that reduces consummatory behavior in mice sensitized to highly palatable food. Similar oscillations are present in human NAc during reward anticipation, highlighting the translational potential of our findings in the development of a treatment for a major unmet need.

scholarly journals Context-specific control over the neural dynamics of temporal attention by the human cerebellum

2020 ◽  
Vol 6 (49) ◽  
pp. eabb1141
Author(s):  
Assaf Breska ◽  
Richard B. Ivry
Keyword(s):  
Phase Locking ◽  
Neural Dynamics ◽  
Beta Band ◽  
Temporal Prediction ◽  
Delta Band ◽  
Interval Representation ◽  
Human Cerebellum ◽  
Context Specific ◽  
Specific Control ◽  
Band Activity

Physiological methods have identified a number of signatures of temporal prediction, a core component of attention. While the underlying neural dynamics have been linked to activity within cortico-striatal networks, recent work has shown that the behavioral benefits of temporal prediction rely on the cerebellum. Here, we examine the involvement of the human cerebellum in the generation and/or temporal adjustment of anticipatory neural dynamics, measuring scalp electroencephalography in individuals with cerebellar degeneration. When the temporal prediction relied on an interval representation, duration-dependent adjustments were impaired in the cerebellar group compared to matched controls. This impairment was evident in ramping activity, beta-band power, and phase locking of delta-band activity. These same neural adjustments were preserved when the prediction relied on a rhythmic stream. Thus, the cerebellum has a context-specific causal role in the adjustment of anticipatory neural dynamics of temporal prediction, providing the requisite modulation to optimize behavior.

P4. Lateralisation of delta band activity in the MEG in patients with focal epilepsy and its relation to verbal fluency

2021 ◽  
Vol 132 (8) ◽  
pp. e3
Author(s):  
A.M. Schuster ◽  
M. Behrens ◽  
N. Conradi ◽  
A. Strzelczyk ◽  
F. Rosenow ◽  
...  
Keyword(s):  
Verbal Fluency ◽  
Focal Epilepsy ◽  
Delta Band ◽  
Band Activity

Mortality salience modulates cortical responses to painful somatosensory stimulation: Evidence from slow wave and delta band activity

NeuroImage ◽  
2015 ◽  
Vol 120 ◽  
pp. 12-24 ◽  
Author(s):  
Elia Valentini ◽  
Katharina Koch ◽  
Valentina Nicolardi ◽  
Salvatore Maria Aglioti
Keyword(s):  
Slow Wave ◽  
Mortality Salience ◽  
Somatosensory Stimulation ◽  
Delta Band ◽  
Cortical Responses ◽  
Band Activity

LORETA analysis of three-dimensional distribution of delta band activity in schizophrenia: Relation to negative symptoms

2011 ◽  
Vol 70 (4) ◽  
pp. 442-448 ◽  
Author(s):  
Toru Itoh ◽  
Tomiki Sumiyoshi ◽  
Yuko Higuchi ◽  
Michio Suzuki ◽  
Yasuhiro Kawasaki
Keyword(s):  
Negative Symptoms ◽  
Three Dimensional ◽  
Delta Band ◽  
Dimensional Distribution ◽  
Band Activity

scholarly journals Context-specific control of the neural dynamics of temporal attention by the human cerebellum

2019 ◽  
Author(s):  
Assaf Breska ◽  
Richard B. Ivry
Keyword(s):  
Phase Locking ◽  
Neural Dynamics ◽  
Beta Band ◽  
Temporal Prediction ◽  
Delta Band ◽  
Interval Representation ◽  
Human Cerebellum ◽  
Context Specific ◽  
Specific Control ◽  
Band Activity

SummaryPhysiological methods have identified a number of signatures of temporal prediction, a core component of attention. While the underlying neural dynamics have been linked to activity within cortico-striatal networks, recent work has shown that the behavioral benefits of temporal prediction causally rely on the cerebellum. Here we examine the involvement of the human cerebellum in the generation and/or temporal adjustment of anticipatory neural dynamics, measuring scalp electroencephalography in individuals with cerebellar degeneration. When the temporal prediction relied on an interval representation, duration-dependent adjustments were impaired in the cerebellar group compared to matched controls. This impairment was evident in ramping activity, beta-band power, and phase locking of delta-band activity. Remarkably, these same neural adjustments were preserved when the prediction relied on a rhythmic stream. Thus, the cerebellum has a context-specific causal role in the adjustment of anticipatory neural dynamics of temporal prediction, providing the requisite modulation to optimize behavior.

scholarly journals Theta and delta band activity explain N2 and P3 ERP component activity in a go/no-go task

2014 ◽  
Vol 125 (1) ◽  
pp. 124-132 ◽  
Author(s):  
Jeremy Harper ◽  
Stephen M. Malone ◽  
Edward M. Bernat
Keyword(s):  
Delta Band ◽  
Band Activity

Alpha Band Activity and CNV Reflect the Evaluation of Target Probability

2007 ◽  
Author(s):  
Waltraud Stadler ◽  
Karim N'Diaye ◽  
Richard Ragot ◽  
Wolfgang Klimesch ◽  
Catherine Tallon-Baudry ◽  
...  
Keyword(s):  
Alpha Band ◽  
Target Probability ◽  
Band Activity
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