Alina Studenova
@studenova.bsky.social
PhD candidate, MPI CBS, MPSCog,
brain oscillations, cortical microstructure
https://alinastudenova.com/
brain oscillations, cortical microstructure
https://alinastudenova.com/
Cool! If this cloud look like a brain, than I'm in motor cortex😄
February 9, 2026 at 11:13 AM
Cool! If this cloud look like a brain, than I'm in motor cortex😄
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
#brainmovies
February 6, 2026 at 2:48 PM
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
#brainmovies
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!🤩
V. interesting!🤩
January 29, 2026 at 9:39 AM
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!🤩
V. interesting!🤩
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
#brainmovies
January 23, 2026 at 12:41 PM
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
#brainmovies
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
#brainmovies
January 9, 2026 at 2:39 PM
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
#brainmovies
Happy New Year and happy learning (new motor skills)!
January 1, 2026 at 11:25 AM
Happy New Year and happy learning (new motor skills)!
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
Here, resting-state alpha power with eyes closed from participants of the LEMON dataset doi.org/10.1038/sdata.2018.308
#brainmovies
December 19, 2025 at 12:19 PM
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
Here, resting-state alpha power with eyes closed from participants of the LEMON dataset doi.org/10.1038/sdata.2018.308
#brainmovies
In real steady-state visual evoked response (SSVER) MEG data, where the location of the response is approximately known, CTF explains the field spread.
December 12, 2025 at 1:17 PM
In real steady-state visual evoked response (SSVER) MEG data, where the location of the response is approximately known, CTF explains the field spread.
In real resting-state EEG, CTF relates to patterns of spurious coherence, which is coherence that is driven purely by leakage. CTF explains spurious coherence better than just comparing ROI by distance, and it explains the difference between extraction pipelines.
December 12, 2025 at 1:15 PM
In real resting-state EEG, CTF relates to patterns of spurious coherence, which is coherence that is driven purely by leakage. CTF explains spurious coherence better than just comparing ROI by distance, and it explains the difference between extraction pipelines.
Also, CTF ratio maps out reconstruction quality with respect to variance of power, the size of the source (point- or patch-like), connectivity pattern, signal-to-noise ratio, and the level of sensor noise.
December 12, 2025 at 1:14 PM
Also, CTF ratio maps out reconstruction quality with respect to variance of power, the size of the source (point- or patch-like), connectivity pattern, signal-to-noise ratio, and the level of sensor noise.
The CTF ratio correlates with the distance to recording sensors, the closer the better; with ROI size, the bigger the better; and with the number of recording sensors, the more the better.
December 12, 2025 at 1:14 PM
The CTF ratio correlates with the distance to recording sensors, the closer the better; with ROI size, the bigger the better; and with the number of recording sensors, the more the better.
CTF ratio, and therefore extraction quality, is different for different methods, even to the point that one can construct a ROI-Frankenstein that combines the best CTF ratios of all methods. Here is an example of eLoreta combined with different methods of ROI aggregation.
December 12, 2025 at 1:12 PM
CTF ratio, and therefore extraction quality, is different for different methods, even to the point that one can construct a ROI-Frankenstein that combines the best CTF ratios of all methods. Here is an example of eLoreta combined with different methods of ROI aggregation.
Dipole fit to somatosensory evoked response. Not ideal at every time point, but around 50 ms lands in the somatosensory cortex, as expected.
#brainmovies
#brainmovies
December 5, 2025 at 3:13 PM
Dipole fit to somatosensory evoked response. Not ideal at every time point, but around 50 ms lands in the somatosensory cortex, as expected.
#brainmovies
#brainmovies
I use ICA for "source" extraction. For some participants, it works well, while for others, it miserably fails. Here, I tried to obtain the right and left M1/S1.
#brainmovies
#brainmovies
November 21, 2025 at 2:37 PM
I use ICA for "source" extraction. For some participants, it works well, while for others, it miserably fails. Here, I tried to obtain the right and left M1/S1.
#brainmovies
#brainmovies
Recently, I was playing with extracting brain activity using ICA (I know that some use SSD, but I use ICA).
Here's one example from the dataset with somatosensory stimulation. There are several components over the right somato-motor area (where the brain responds to stimulation).🧐
#brainmovie
Here's one example from the dataset with somatosensory stimulation. There are several components over the right somato-motor area (where the brain responds to stimulation).🧐
#brainmovie
November 7, 2025 at 1:34 PM
Recently, I was playing with extracting brain activity using ICA (I know that some use SSD, but I use ICA).
Here's one example from the dataset with somatosensory stimulation. There are several components over the right somato-motor area (where the brain responds to stimulation).🧐
#brainmovie
Here's one example from the dataset with somatosensory stimulation. There are several components over the right somato-motor area (where the brain responds to stimulation).🧐
#brainmovie
Second day at the Brain Quantum Imaging symposium: Ole Jensen about reading.
Two interesting things: 1) when reading, alpha rhythm power remains strong (not stronger than resting but still there); 2) alpha may be involved in visuomotor coordination.🤔
Two interesting things: 1) when reading, alpha rhythm power remains strong (not stronger than resting but still there); 2) alpha may be involved in visuomotor coordination.🤔
October 22, 2025 at 9:40 AM
Second day at the Brain Quantum Imaging symposium: Ole Jensen about reading.
Two interesting things: 1) when reading, alpha rhythm power remains strong (not stronger than resting but still there); 2) alpha may be involved in visuomotor coordination.🤔
Two interesting things: 1) when reading, alpha rhythm power remains strong (not stronger than resting but still there); 2) alpha may be involved in visuomotor coordination.🤔
Today I'm at Brain Quantum Imaging symposium in Berlin. Learning a lot about optically pumped magnetometers (OPMs). Many interesting talks!
One highlight is Saskia Helbling on whether we can infer laminar origin of signals with OPMs. Answer: there are many things to consider.
doi.org/10.1162/imag...
One highlight is Saskia Helbling on whether we can infer laminar origin of signals with OPMs. Answer: there are many things to consider.
doi.org/10.1162/imag...
October 21, 2025 at 10:17 AM
Today I'm at Brain Quantum Imaging symposium in Berlin. Learning a lot about optically pumped magnetometers (OPMs). Many interesting talks!
One highlight is Saskia Helbling on whether we can infer laminar origin of signals with OPMs. Answer: there are many things to consider.
doi.org/10.1162/imag...
One highlight is Saskia Helbling on whether we can infer laminar origin of signals with OPMs. Answer: there are many things to consider.
doi.org/10.1162/imag...
Nick (@willenjoy.bsky.social) is obsessed with signal-to-noise ratio (SNR). And for good reason! It could explain many results. Our simulation toolbox meegsim enables setting up SNR of individual sources as well as SNR of all signal sources with respect to all noise sources.
meegsim.readthedocs.io
meegsim.readthedocs.io
October 17, 2025 at 1:00 PM
Nick (@willenjoy.bsky.social) is obsessed with signal-to-noise ratio (SNR). And for good reason! It could explain many results. Our simulation toolbox meegsim enables setting up SNR of individual sources as well as SNR of all signal sources with respect to all noise sources.
meegsim.readthedocs.io
meegsim.readthedocs.io
We (I and @willenjoy.bsky.social) created a toolbox for simulations of EEG/MEG because we needed to simulate data. Our initial aim was to simulate connectivity. For this short clip, I simulated two sources with phase connectivity using our toolbox.
#brainmovie
meegsim.readthedocs.io/en/stable/in...
#brainmovie
meegsim.readthedocs.io/en/stable/in...
October 3, 2025 at 1:00 PM
We (I and @willenjoy.bsky.social) created a toolbox for simulations of EEG/MEG because we needed to simulate data. Our initial aim was to simulate connectivity. For this short clip, I simulated two sources with phase connectivity using our toolbox.
#brainmovie
meegsim.readthedocs.io/en/stable/in...
#brainmovie
meegsim.readthedocs.io/en/stable/in...
Simulations are fun! Especially with the right tools😉.
@willenjoy.bsky.social and I (with support from Mina Jamshidi) made a toolbox for simulating EEG/MEG data
meegsim.readthedocs.io
I put together a quick simulation using it for this short clip. Took me 10 minutes (no, really!)
#brainmovies
@willenjoy.bsky.social and I (with support from Mina Jamshidi) made a toolbox for simulating EEG/MEG data
meegsim.readthedocs.io
I put together a quick simulation using it for this short clip. Took me 10 minutes (no, really!)
#brainmovies
September 26, 2025 at 2:10 PM
Simulations are fun! Especially with the right tools😉.
@willenjoy.bsky.social and I (with support from Mina Jamshidi) made a toolbox for simulating EEG/MEG data
meegsim.readthedocs.io
I put together a quick simulation using it for this short clip. Took me 10 minutes (no, really!)
#brainmovies
@willenjoy.bsky.social and I (with support from Mina Jamshidi) made a toolbox for simulating EEG/MEG data
meegsim.readthedocs.io
I put together a quick simulation using it for this short clip. Took me 10 minutes (no, really!)
#brainmovies
Highlight of the day is a poster.
Have you ever looked for a sock in a pile of socks? You may have a full template or a partial (only pattern). You will be quicker if you have a full template but also when other socks look different. Soon to be published by Norman www.uni-leipzig.de/personenprof...
Have you ever looked for a sock in a pile of socks? You may have a full template or a partial (only pattern). You will be quicker if you have a full template but also when other socks look different. Soon to be published by Norman www.uni-leipzig.de/personenprof...
September 19, 2025 at 3:43 PM
Highlight of the day is a poster.
Have you ever looked for a sock in a pile of socks? You may have a full template or a partial (only pattern). You will be quicker if you have a full template but also when other socks look different. Soon to be published by Norman www.uni-leipzig.de/personenprof...
Have you ever looked for a sock in a pile of socks? You may have a full template or a partial (only pattern). You will be quicker if you have a full template but also when other socks look different. Soon to be published by Norman www.uni-leipzig.de/personenprof...
Today's keynote at #ICON2025 is by Marta Garrido about blindsight. Eye-opening for me was that blindsight is not one unitary phenomenon. There are motion blindsight and emotional blindsight, and different pathways are involved in each type.
September 18, 2025 at 1:53 PM
Today's keynote at #ICON2025 is by Marta Garrido about blindsight. Eye-opening for me was that blindsight is not one unitary phenomenon. There are motion blindsight and emotional blindsight, and different pathways are involved in each type.
The keynote for today at #ICON2025 is Uta Noppeney on the binding problem, which is how the brain understands if sensory signals come from a common cause.
Great talk and v. interesting topic👏
Great talk and v. interesting topic👏
September 16, 2025 at 1:34 PM
The keynote for today at #ICON2025 is Uta Noppeney on the binding problem, which is how the brain understands if sensory signals come from a common cause.
Great talk and v. interesting topic👏
Great talk and v. interesting topic👏