iiinova — where your digital self keeps evolving

Alina Studenova @studenova.bsky.social · 09/10/2026

Evoked responses (ERP) can be generated via phase reset of ongoing oscillations. Here, simulated oscillatory phase is reset to 90° at t=0. When averaged over trials, incoherent oscillations cancel out, but consistent part persists. After all, ERP is just an event with phase consistency. #brainmovies

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Alina Studenova @studenova.bsky.social · 08/10/2026

Today I'm (virtually) at the Erwin L. Hahn Lecture & Workshop on ultra-high-resolution MRI/fMRI. Extremely interesting program!🤩 hahn-institute.de/en/info/hahn...

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Alina Studenova @studenova.bsky.social · 05/10/2026

Fine motor skills are important at any age. Over the weekend, I crocheted this alpha motor neuron innervating a muscle.☺️

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Alina Studenova @studenova.bsky.social · 01/10/2026

Today at #Bernsteinconference is Anna Levina on intrinsic timescales of neural dynamics👏. Timescales can be estimated from any brain signals, spikes, local field potentials, rhythms(?). Longer time-scale dynamics is closer to the critical point, but sometimes having a shorter is useful behaviorally.

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Alina Studenova @studenova.bsky.social · 30/09/2026

Today's highlight of the #Bernsteinconference is Richard Naud on learning. V. interesting!👏 1) bursting spiking can serve as a mechanism of learning, 2) errors are addressed by the neuron that should have been involved in the right choice and not by the neuron that was involved in the wrong choice.

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Alina Studenova @studenova.bsky.social · 29/09/2026

Second day of the workshop "Bridging the species divide: comparative approaches to study neural signatures" at #Bernsteinconference. Yesterday, we listened to talks about theta and alpha, today more alpha and gamma. Exciting!🎉

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Alina Studenova @studenova.bsky.social · 28/09/2026

I'm at workshop "Bridging the species divide: comparative approaches to study neural signatures" at #Bernsteinconference organized by Natalie @nschawor.bsky.social and Dennis @neuralnestbird.bsky.social Excited to be here😍 We started with Natalie explaining the challenge. Room 3.101.

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Alina Studenova @studenova.bsky.social · 18/09/2026

Some oscillations have an asymmetric shape (or non-zero mean). Their troughs are peakier than peaks (or the other way round). These oscillations, when modulated in amplitude (literally always), will have their modulation "copied" in the lower-frequency signal. Here's simulated example. #brainmovies

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Alina Studenova @studenova.bsky.social · 04/09/2026

M\EEG signals are autocorrelated. Here, I cut the resting-state data into trials and correlated the "pre-stimulus" window with other windows, like correlating two ERPs across trials. High correlation persists for some time. Also, some participants have larger and longer autocorrelation. #brainmovies

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Alina Studenova @studenova.bsky.social · 25/08/2026

The keynote of today at #BIOMAG2026 is Lucia Melloni on adversarial collaborations in consciousness research. Apart from stressing the need to test theories against each other, Lucia touched upon problems with methods; e.g., they got almost no results using connectivity measures in MEG. No surprise😑

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Alina Studenova @studenova.bsky.social · 24/08/2026

Our symposium about laminar inference at #BIOMAG2026 opens up with a talk by James Bonaiuto🤩

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Alina Studenova @studenova.bsky.social · 24/08/2026

The keynote of today at #BIOMAG2026 is Yunzhe Liu on learning and intelligence in development. Apart from the fMRI, they used MEG to measure replay in entorhinal cortex. Maybe🤞

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Alina Studenova @studenova.bsky.social · 23/08/2026

The first keynote at #BIOMAG2026 is Fang Fang on visual learning. Impressive research using numerous neuroimaging techniques.👏 Indeed, it turns out that it's possible to learn to detect faint gratings and weak coherence in dot motion.

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Alina Studenova @studenova.bsky.social · 23/08/2026

Next free days I'm at #BIOMAG2026 in Beijing. The programm looks exciting!🤩

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Alina Studenova @studenova.bsky.social · 07/08/2026

Common spatial patterns (CSP) filtering is used in many applications. In my lab, we use it to obtain a "cleaner" ERD. I made a short video on how I use CSP for alpha ERDs in self-paced movements (MEG data). I don't like it, though. It seems to me that CSP can conjure ERDs from the void. #brainmovies

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Alina Studenova @studenova.bsky.social · 17/07/2026

So I took this blink thing seriously and decided to check a somatosensory stimulation dataset. And look, people do blink more before undetected trials. Oddly, they also blink more right after the stimulus that was felt. After that, they blink again at 2 s because of the prompt. Cool!🤩 #brainmovies

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Alina Studenova @studenova.bsky.social · 03/07/2026

In near-threshold research, we determine individual detection threshold by testing a range of stimulus intensities and fitting a sigmoid (psychometric curve). Here, I simulated effect of the slope: it affects trial-by-trial consistency in detection and reliability of initial estimation. #brainmovies

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Alina Studenova @studenova.bsky.social · 18/06/2026

It was my first #OHBM2026, certainly not the last😍😍😍 Great section of talks, amazing posters, lovely people! Thanks a lot to the organizers!

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Alina Studenova @studenova.bsky.social · 17/06/2026

Today's keynote at #OHBM2026 is Dr. Vitória Piai about language. Language is not my jam, but Dr. Piai addressed several common issues that I was able to relate.☺️ For instance, the abstraction problem: "no two instances of 'the same' biological mechanism are physically identical".🤔

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Alina Studenova @studenova.bsky.social · 16/06/2026

A career advice at #OHBM2026 from Dr. Vince Calhoun. It seems to me that it is not just academy career advice but in general life advice.👍 Among other points: - paper is a progress report not a final monument - you are more than your last result - luck favors the prepared

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Alina Studenova @studenova.bsky.social · 16/06/2026

Highlight of today at #OHBM2026 is symposium on voluntary movements and sense of agency, honoring Mark Hallett's work. In particular, the focus is on disorders of movement, such as functional neurological disorders, distonia and Parkinson’s disease tremor.

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Alina Studenova @studenova.bsky.social · 16/06/2026

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Alina Studenova @studenova.bsky.social · 15/06/2026

Amazing keynote at #OHBM2026 by Dr. Nanthia Suthana "Mapping the Human Brain in Naturalistic Environments".😍 Theta bouts in invasive hippocampal recordings in humans. Proposed framework: theta bouts reflect internal search processes that occur when retrieving memory, especially under uncertainty.

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Alina Studenova @studenova.bsky.social · 14/06/2026

First day at #OHBM2026 My poster is tomorrow. Meanwhile there are educational courses. Particularly interesting is "Neuroanatomy and its impact on structural and functional imaging"😍

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Alina Studenova @studenova.bsky.social · 12/06/2026

It was widespread in the past, but even now some use just one EEG electrode in the sensor space for analysis. Here I plotted leadfield from C4 for different participants in the LEMON dataset. Heterogeneous🤔. Individual MRIs are used for the forward model, but the montage is standard. #brainmovies

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Alina Studenova @studenova.bsky.social · 09/06/2026

Amazing workshop on C-tests (tests for consciousness)😍 www.uni-bamberg.de/en/bamxi/res...

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Alina Studenova @studenova.bsky.social · 29/05/2026

Averaged-over-trials evoked responses (ERPs) also have frequency content. Here, I'm exploring P50 after somatosensory stimulation. I computed the power of the already averaged ERP (also known as "evoked power") using wavelets. P50 has frequency in the alpha-lower beta range. #brainmovies

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Alina Studenova @studenova.bsky.social · 22/05/2026

Today I'm at Applied Causal Graphs workshop🤩 . So cool! DAGs are definitely underrated in neuroscience.

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Alina Studenova @studenova.bsky.social · 08/05/2026

I'm trying to make sense of spaces for source reconstruction (EEG or MEG) and brain anatomy (from MRI). In a way, I'm exploring possible sources of variance. Leadfield gain = column norm. Curvature = concave or convex. LGI = how folded the cortical area is. #brainmovies

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Alina Studenova @studenova.bsky.social · 04/05/2026

Super cool project😍! And I over the weekend crocheted basal ganglia.

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Alina Studenova @studenova.bsky.social · 24/04/2026

Basic but may be missed. It is possible to detect differences in the amplitudes of evoked responses using a cluster-based permutation test, which is, in reality, just a difference in latency. Also interesting, of course, but could be interpreted in a different manner. #brainmovies

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Alina Studenova @studenova.bsky.social · 10/04/2026

I tried invertmeeg with P50 EEG data. It was fun🤩! However, I cannot say I found the perfect method. Based on the topography, the activity should be from a tagential dipole. Based on previous findings, it should be in area 3b. But I got in the precentral gyrus or on the crown (~area 1). #brainmovies

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Alina Studenova @studenova.bsky.social · 27/03/2026

Alpha event-related desynchronization occurs after every stimulus and before the movement. But what neurons do? Is that because of the stimulus, some neurons are recruited, and they leave the oscillatory regime? Or after the stimulus, neurons operate in a completely different fashion? #brainmovies

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Alina Studenova @studenova.bsky.social · 11/03/2026

Last day at #MBB2026 Keynote by Julian Thayer on "Breathing is Fundamental: A Mind/Brain/Body Perspective".

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Alina Studenova @studenova.bsky.social · 10/03/2026

Amazing talk by Ulrike Bingel on expectations "Mind over matter: how expectations shape health and treatment outcomes" #MBB2026 Interestingly, nocebo effects are easier to induce than placebo effects🤔

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Alina Studenova @studenova.bsky.social · 09/03/2026

Today I'm at MindBrainBody symposium #MBB2026 Keynote by Karl J. Friston "The physics of affordance"

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Alina Studenova @studenova.bsky.social · 06/03/2026

Evoked responses in individual participants rarely look like an average over all participants. Does it mean we should have collected more trials? And what if the average from one dataset doesn't look like the average from another dataset? Should we collect more participants? #brainmovies

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Alina Studenova @studenova.bsky.social · 27/02/2026

Meanwhile, across participants, alpha power correlated *negatively* with myelin and iron estimates from a mid-cortical component. (4/6)

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Alina Studenova @studenova.bsky.social · 27/02/2026

Across regions, using data from different cohorts and different modalities, we found that alpha power correlated positively with the thickness of layer IV and with myelin and iron estimates from the mid-cortical component. (3/6)

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Alina Studenova @studenova.bsky.social · 27/02/2026

Structure was obtained from the post-mortem brain and high-resolution MRI (in-vivo histology). Dynamics were obtained from EEG and MEG. We looked for relations from two angles: across regions and across participants. (2/6)

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Alina Studenova @studenova.bsky.social · 20/02/2026

The angle of the dipole obviously matters. If active dipoles in two conditions are slightly misaligned, a difference can be observed. However, this difference is not driven by differences in amplitudes, but only by differences in orientations. Here, I simulated such a scenario. #brainmovies

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Alina Studenova @studenova.bsky.social · 09/02/2026

Cool! If this cloud look like a brain, than I'm in motor cortex😄

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Alina Studenova @studenova.bsky.social · 06/02/2026

If oscillations are modulated in amplitude from trial to trial, and those oscillations have a non-zero mean, they "create" an evoked response. It is a baseline-shift mechanism for ERP/ERF generation. Here is a simulated example of how alpha oscillations may generate readiness potential. #brainmovies

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Alina Studenova @studenova.bsky.social · 29/01/2026

Amazing workshop "Panpsychism, Non-Physicalism and the Causal Powers of Consciousness" with Prof. Hedda Hassel Mørch on her recent book organized by Tobias Schlicht (wait, what?) at Ruhr-Universität Bochum and also online at www.pe.ruhr-uni-bochum.de/philosophie/... V. interesting!🤩

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Alina Studenova @studenova.bsky.social · 23/01/2026

I have been trying to simulate event-related alpha amplitude decrease with the Jansen-Rit model. Turns out adding external inhibitory input abolishes alpha. Pretty obvious. But how does it agree with more alpha = more inhibition? #brainmovies

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Alina Studenova @studenova.bsky.social · 09/01/2026

I have been trying to understand how the depth of a "source" influences its topography. Here are short and exaggerated simulations of EEG data (no real dipoles in white matter). Note that each frame of the topography was z-scored. So the deeper, the more spread out? #brainmovies

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Alina Studenova @studenova.bsky.social · 01/01/2026

Happy New Year and happy learning (new motor skills)!

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Alina Studenova @studenova.bsky.social · 19/12/2025

I'm interested in individual differences. Regarding resting-state alpha power, it is usually said that the power is high in occipital areas. However, not for everybody. Here, resting-state alpha power with eyes closed from participants of the LEMON dataset doi.org/10.1038/sdata.2018.308 #brainmovies

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Alina Studenova @studenova.bsky.social · 12/12/2025

In real steady-state visual evoked response (SSVER) MEG data, where the location of the response is approximately known, CTF explains the field spread.

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