In this MEG study we used ICA to identify two functionally distinct alpha components that are differentially modulated by attention and show opposite relationships with behavioural performance — highlighting the importance of disentangling overlapping alpha dynamics that stem from different sources!

Imaging Neuroscience@imagingneurosci.bsky.social · 3mo ago

New paper in Imaging Neuroscience by Gamze Bilgen, Saskia Haegens, et al: Functionally distinct alpha components are differentially modulated by attention and affect behavior doi.org/10.1162/IMAG...

New preprint out! In this opinion paper, we review our recent work showing that frontal beta frequency shifts signal categorical decisions. We propose that the observed frequency modulations emerge from the recruitment of distinct neural ensembles when different (categorical) decisions are made.

Beta frequency shifts in decision making: Spectral fingerprints or communication channels?

Recent evidence suggests that beta-band activity plays a key role in decision-making. Here we review our recent work in humans and non-human primates showing that beta-band frequency shifts in frontal...

arxiv.org

Another paper out! New research from our lab explores how beta-band activity signals decisions. We show that subtle shifts in beta-band *frequency* signal categorical decision outcomes — a neural signature that generalizes across tasks and species. ➡️ www.cell.com/iscience/ful...

Beta-band frequency shifts signal decisions in human prefrontal cortex

Beta-band synchronization has been found to be content-specific, particularly during decision-making. Recently, we showed a beta-band frequency shift in macaque prefrontal cortex to reflect categorica...

cell.com

Fluctuations in #AlphaOscillations influence whether we perceive faint stimuli, but how? @joeyzhou.bsky.social @haegenslab.bsky.social &co show that alpha associated with the #visual system modulate sensitivity, while #sensorimotor alpha affects decision criteria @plosbiology.org 🧪 plos.io/4ho3ecR

Check out our latest work led by @joeyzhou.bsky.social on alpha oscillatory networks in PLOS Biology! ➡️ journals.plos.org/plosbiology/... Do ongoing alpha activity fluctuations influence perceptual sensitivity or criterion?

Distinct alpha networks modulate different aspects of perceptual decision-making

Fluctuations in alpha-band neural oscillations influence whether we perceive faint stimuli, but how these oscillations relate to different perceptual processes is not clear. This study shows that alph...

journals.plos.org

we are recruiting! looking for a postdoc with great electrophys and data analysis skills for a project in collaboration with @jonescompneurolab.bsky.social and @dralexharris.bsky.social to study the role of beta frequency shifts in decision-making.

Low alpha power boosts faint stimulus detection—but how? 🤔 After much head-scratching, we took a network approach and found that different alpha networks play distinct roles: the visual alpha network tunes perceptual sensitivity, while the sensorimotor alpha network shapes decision criteria. 🧠✨

Distinct Alpha Networks Modulate Different Aspects of Perceptual Decision-Making

Why do we sometimes perceive a faint stimulus but miss it at other times? One explanation is that conscious perception fluctuates with the brains internal state, influencing how external stimuli are p...

biorxiv.org

we are recruiting! looking for a postdoc with great electrophys and data analysis skills for a project in collaboration with @jonescompneurolab.bsky.social and @dralexharris.bsky.social to study the role of beta frequency shifts in decision-making.

New paper out! peerj.com/articles/184... We asked whether neural mechanisms for time estimation are similar in monkeys and humans. We compared ERPs during a temporal bisection task, in which participants had to determine whether the duration of a time interval was longer or shorter than a prototype.