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Katharina Duecker

@katduecker.bsky.social

671 followers 246 following 37 posts

comp neuro postdoc with Stephanie Jones at Brown | HNN developer | passionate about oscillatory dynamics and their role in neuronal computation 🧠 sites.brown.edu/stephanie-r-jones-l…

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Katharina Duecker @katduecker.bsky.social · 30/08/2025

At long last, the pre-print to our MEG study + RIFT study and the final paper from my Ph.D with @olejensen.bsky.social We show that strong pre-search alpha oscillations are associated with faster responses in visual search www.biorxiv.org/content/10.1... @thechbh.bsky.social #neuroskyence

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Katharina Duecker @katduecker.bsky.social · 06/12/2024

statistically significant :) @camelphat.bsky.social

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Katharina Duecker @katduecker.bsky.social · 29/11/2023

When presented with two stimuli simultaneously, the refractory dynamics result in the read-out alternating between the two letters (left). Adding inhibitory oscillations results in a phase code, whereby the inputs are sorted based on their salience (right).

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Katharina Duecker @katduecker.bsky.social · 29/11/2023

We then introduced oscillatory dynamics based on refraction and pulses of inhibition (akin to alpha in visual cortex) into the network. The dynamics in the response to a single letter (A) show how the inhibitory oscillations clean up the dynamics (compare left & right panel).

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Katharina Duecker @katduecker.bsky.social · 29/11/2023

We first trained a 2-layer NN to classify 3 letters presented in 4 quadrants. As expected, when presented with two stimuli simultaneously, the network produces a mixed representation of both stimuli. This indicates a computational bottleneck.

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Katharina Duecker @katduecker.bsky.social · 29/11/2023

The notion that object recognition underlies serial processes goes back to early ideas by Broadbent (1953). The brain must find a way to segregate representations of simultaneous stimuli. One idea is that inhibitory oscillations organise these representations as a phase code.

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Katharina Duecker @katduecker.bsky.social · 29/11/2023

We integrated refractory dynamics and pulses of inhibition into the hidden layers of an ANN & show that oscillations enable multiplexing of simultaneous stimuli. Proof-of-concept paper with Marco Idiart, Marcel van Gerven & @olejensen.bsky.social www.biorxiv.org/content/10.1...

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