Sharpening attention through alpha and gamma oscillations. Mathilde BONNEFOND

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Transcription:

Sharpening attention through alpha and gamma oscillations Mathilde BONNEFOND Monthly Neuroimaging Meeting Marseille, 21th of September 2017

excitability Selecting information in a complex world + -

Attentional role of alpha and gamma oscillations Fries et al. (2015, Neuron) Varela et al. (2001, Nature Neuroscience) Jensen et al. (2015, TINS) Klimesch et al. (2007, BRR)

Alpha modulation by attention Phase under control? Capilla et al.2012 Jensen, Gips, Bergmann, Bonnefond (2015, TINS) Klimesch et al. (2007, BRR) MEG

Alpha modulation by attention memory items distracter target { Strong vs weak distracter Bonnefond and Jensen (2012, Curr. Biol.) Bonnefond and Jensen (2013, Comm. Int. Biol.) Amplitude MEG

Alpha modulation by attention memory items distracter target Bonnefond and Jensen (2012, Curr. Biol.) Bonnefond and Jensen (2013, Comm. Int. Biol.) Phase locking across trials MEG

Alpha modulation by attention memory items distracter target { Bonnefond and Jensen (2012, Curr. Biol.) Bonnefond and Jensen (2013, Comm. Int. Biol.) MEG

Alpha modulation by attention memory items distracter target { Network with alpha phase adjusted Bonnefond and Jensen (2012, Curr. Biol.) Bonnefond and Jensen (2013, Comm. Int. Biol.) MEG

Alpha modulation by attention Is alpha phase topdown controlled? NO YES EEG

Frequency (Hz) Alpha modulation by attention + 1s cue + + 1.1s 1.15s target pi ti Three possible syllables: pi, ti, ki 75% incongruent pairs 25% congruent pairs Visual vs. auditory Solis-Vivanco, Jensen & Bonnefond (submitted) time (s) MEG

Alpha modulation by attention + 1s cue + + 1.1s 1.15s target pi ti Three possible syllables: pi, ti, ki 75% incongruent pairs 25% congruent pairs Condition*power*phase effect: Fastest reaction time for good phase and low power Slowest reaction time for bad phase and high power Solis-Vivanco, Jensen and Bonnefond (submitted) MEG

Gamma modulation by attention Top-down controlled Change in gamma power, frequency and inter-areal synchrony with attention Fries(2016, Neuron)

Gamma modulation by attention memory items distracter target Bonnefond and Jensen (2012, Curr. Biol.) Bonnefond and Jensen (2013, Comm. Int. Biol.) MEG

Alpha-gamma coupling modulation by attention Cross-frequency coupling Gamma activity Alpha activity Osipova et al. 2008; Voytek et al. 2010; Spaak et al. 2012; Bahramisharif et al.2013

Alpha-gamma coupling modulation by attention memory items distracter target Significant MI Bonnefond and Jensen (2015, Plos One) Peak-locked time frequency MEG

Alpha-gamma coupling modulation by attention Low + - Local inhibition High + 100ms -- Fries et al. (2015, Neuron) Varela et al. (2001, Nature Neuroscience) Jensen et al. (2015, TINS) Klimesch et al. (2007, BRR)

Alpha-gamma coupling modulation by attention memory items distracter target Bonnefond and Jensen (2015, Plos One) Implementation? Peak-locked contrast

Alpha-gamma coupling modulation by attention Monkey

Alpha-gamma coupling modulation by attention Superficial Phase dependent Alpha-Gamma correlation Deep Significant MI Time relative to alpha peaks Infragranular alpha Spaak, Bonnefond, Maier, Leopold, Jensen (2012, Curr. Biol.) During stimulus processing? Monkey

Alpha-gamma coupling modulation by attention memory items distracter target Significant MI Bonnefond and Jensen (2015, Plos One) MEG

Alpha-gamma coupling modulation by attention Jensen, Gips, Bergmann, Bonnefond 2014, TINS Bonnefond, Kastner, Jensen 2017, eneuro

Alpha-gamma coupling modulation by attention V2/V3 Gutteling, Bonnefond, Self, Jensen (in prep.) ieeg

Alpha-gamma coupling modulation by attention Bonnefond, Van Kerkoerle, Roelfsema, Jensen (in prep.) Significant power difference Monkey

Framework Bonnefond, Kastner and Jensen (2017, eneuro)

Ole Jensen Eelke Spaak Tjerk Gutteling Rodolfo Solis-Vivanco Thank you for your attention

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