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Oscillatory Dynamics

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oscillatory dynamics

Discover seminars, jobs, and research tagged with oscillatory dynamics across World Wide.
6 curated items5 ePosters1 Seminar
Updated about 2 years ago
6 items · oscillatory dynamics
6 results
SeminarNeuroscienceRecording

Event-related frequency adjustment (ERFA): A methodology for investigating neural entrainment

Mattia Rosso
Ghent University, IPEM Institute for Systematic Musicology
Nov 28, 2023

Neural entrainment has become a phenomenon of exceptional interest to neuroscience, given its involvement in rhythm perception, production, and overt synchronized behavior. Yet, traditional methods fail to quantify neural entrainment due to a misalignment with its fundamental definition (e.g., see Novembre and Iannetti, 2018; Rajandran and Schupp, 2019). The definition of entrainment assumes that endogenous oscillatory brain activity undergoes dynamic frequency adjustments to synchronize with environmental rhythms (Lakatos et al., 2019). Following this definition, we recently developed a method sensitive to this process. Our aim was to isolate from the electroencephalographic (EEG) signal an oscillatory component that is attuned to the frequency of a rhythmic stimulation, hypothesizing that the oscillation would adaptively speed up and slow down to achieve stable synchronization over time. To induce and measure these adaptive changes in a controlled fashion, we developed the event-related frequency adjustment (ERFA) paradigm (Rosso et al., 2023). A total of twenty healthy participants took part in our study. They were instructed to tap their finger synchronously with an isochronous auditory metronome, which was unpredictably perturbed by phase-shifts and tempo-changes in both positive and negative directions across different experimental conditions. EEG was recorded during the task, and ERFA responses were quantified as changes in instantaneous frequency of the entrained component. Our results indicate that ERFAs track the stimulus dynamics in accordance with the perturbation type and direction, preferentially for a sensorimotor component. The clear and consistent patterns confirm that our method is sensitive to the process of frequency adjustment that defines neural entrainment. In this Virtual Journal Club, the discussion of our findings will be complemented by methodological insights beneficial to researchers in the fields of rhythm perception and production, as well as timing in general. We discuss the dos and don’ts of using instantaneous frequency to quantify oscillatory dynamics, the advantages of adopting a multivariate approach to source separation, the robustness against the confounder of responses evoked by periodic stimulation, and provide an overview of domains and concrete examples where the methodological framework can be applied.

ePoster

Bilateral, symmetrical oscillatory dynamics in human brainstem: Can we utilize them to differentiate between wakefulness and anaesthesia?

Alceste Deli, Yongzhi Huang, Alexander Green

FENS Forum 2024

ePoster

Comparative analysis of oscillatory dynamics in the human and rodent brains

Adrien Causse, Jonathan Curot, Amaury De Barros, Luc Valton, Marie Denuelle, Jean-Albert Lotterie, Sara Fernandez-Vidal, Timothy Denison, Emmanuel J. Barbeau, Leila Reddy, David Dupret

FENS Forum 2024

ePoster

Distinct oscillatory dynamics in the rat medial prefrontal cortex suggest beta bursts as a potential mediator of executive control

Ahmed Adžemović, Zoe Jäckel, Ilka Diester

FENS Forum 2024

ePoster

Harmonic oscillator networks (HORNs) and the functional role of oscillatory dynamics in neocortical circuits

Felix Effenberger, Pedro Carvalho, Dubinin Igor, Wolf Singer

FENS Forum 2024

ePoster

Properties and predictive potential of the pre-ictal oscillatory dynamics in an ex vivo model of seizure-like activity in the different hippocampal subregions

Lida Vagiaki, Dionysios Xydias, Maria Kefalogianni, Sotiris Psilodimitrakopoulos, Emmanouel Stratakis, Kyriaki Sidiropoulou

FENS Forum 2024