Fraser Aitken
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fraser-a.bsky.social
Fraser Aitken
@fraser-a.bsky.social
43 followers 32 following 9 posts
Post Doc at the Dept of Biomedical Engineering and Imaging Sciences at Kings College London. Working on clinical applications of Laminar fMRI, especially in Epilepsy.
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Reposted by Fraser Aitken
peterkok.bsky.social
@dotproduct.bsky.social's first first author paper is finally out in @sfnjournals.bsky.social! Her findings show that content-specific predictions fluctuate with alpha frequencies, suggesting a more specific role for alpha oscillations than we may have thought. With @jhaarsma.bsky.social. 🧠🟦 🧠🤖
Contents of visual predictions oscillate at alpha frequencies
Predictions of future events have a major impact on how we process sensory signals. However, it remains unclear how the brain keeps predictions online in anticipation of future inputs. Here, we combin...
www.jneurosci.org
October 21, 2025 at 11:05 AM
Reposted by Fraser Aitken
layerfmri.bsky.social
There is going to be an exiting workshop on advanced fMRI end of October in Erice, Sicily (Italy).

The agenda looks just at great as the location.

ismrbf.marbilab.eu/events/7-xiv...
September 12, 2025 at 5:36 PM
Reposted by Fraser Aitken
imagingneuroucl.bsky.social
“From mapping to explaining brain function: the generative theoretical ambition of SPM” - our article in Cerebral Cortex forms part of our 30(ish) year celebration of SPM.

academic.oup.com/cercor/artic...
SPM—30 years and beyond
Abstract. This paper marks the 30th anniversary of the Statistical Parametric Mapping (SPM) software and the journal Cerebral Cortex: two modest milestones
academic.oup.com
September 15, 2025 at 7:14 AM
Reposted by Fraser Aitken
layerfmri.bsky.social
2/2
Häkkinen et al., investigated how to push layer-fMRI VASO at the next-Gen 7T (Feinbergatron) 7T scanner for layer-specific circuitry mapping. The fast gradients reveal temporal dynamics and connectivity with the cortex.
doi.org/10.1101/2025...
September 8, 2025 at 12:04 PM
Reposted by Fraser Aitken
layerfmri.bsky.social
New manuscript that uses layer-fMRI to investigate the brain mechanism of afterimages.
By @sharifkronemer et al.,
doi.org/10.1101/2025...
September 8, 2025 at 12:32 PM
Reposted by Fraser Aitken
storrisi.bsky.social
From a few years ago but it disappeared off yt so I recently re-uploaded. SurfLayers demo. #tbt youtu.be/Py0a8O2h-gc?...
OHBM 2021 SurfLayers abstract video
YouTube video by Sam Torrisi
youtu.be
September 4, 2025 at 7:03 PM
fraser-a.bsky.social
Our review discussing the potential use of laminar fMRI for probing the role of cortical layers in epileptic seizure propagation and spread as well as it possible future clinical applications out in Brain (well as accepted manuscript!)

academic.oup.com/brain/advanc...
The potential of laminar functional MRI in refining the understanding of epilepsy in humans
Aitken et al. highlight laminar fMRI as a tool to connect the neural effects of anti-seizure medications with the microcircuits that generate seizures in e
academic.oup.com
September 3, 2025 at 7:24 PM
Reposted by Fraser Aitken
layerfmri.bsky.social
New layer fMRI book chapter on the value of layer-fMRI for understanding psychiatric disorders.

by J Haarsma and P Kok @jhaarsma.bsky.social @peterkok.bsky.social

doi.org/10.1007/7854...
July 16, 2025 at 4:20 PM
Reposted by Fraser Aitken
dotproduct.bsky.social
Beautiful paper by the brilliant @jhaarsma.bsky.social exploring how false and veridical percepts converge and diverge. Turns out both share content-specific and confidence signals; and hellohello pre-stimulus alpha... what are you up to with false percepts?
June 10, 2025 at 11:17 AM
Reposted by Fraser Aitken
maciekszul.bsky.social
🚨🚨🚨PREPRINT ALERT🚨🚨🚨
Neural dynamics across cortical layers are key to brain computations - but non-invasively, we’ve been limited to rough "deep vs. superficial" distinctions. What if we told you that it is possible to achieve full (TRUE!) laminar (I, II, III, IV, V, VI) precision with MEG!
Overview of the simulation strategy and analysis. a) Pial and white matter boundaries surfaces are extracted from anatomical MRI volumes. b) Intermediate equidistant surfaces are generated between the pial and white matter surfaces (labeled as superficial (S) and deep (D) respectively). c) Surfaces are downsampled together, maintaining vertex correspondence across layers. Dipole orientations are constrained using vectors linking corresponding vertices (link vectors). d) The thickness of cortical laminae varies across the cortical depth (70–72), which is evenly sampled by the equidistant source surface layers. e) Each colored line represents the model evidence (relative to the worst model, ΔF) over source layer models, for a signal simulated at a particular layer (the simulated layer is indicated by the line color). The source layer model with the maximal ΔF is indicated by “˄”. f) Result matrix summarizing ΔF across simulated source locations, with peak relative model evidence marked with “˄”. g) Error is calculated from the result matrix as the absolute distance in mm or layers from the simulated source (*) to the peak ΔF (˄). h) Bias is calculated as the relative position of a peak ΔF(˄) to a simulated source (*) in layers or mm.
June 2, 2025 at 11:55 AM
Reposted by Fraser Aitken
peterkok.bsky.social
Our study using layer fMRI to study the direction of communication between the hippocampus and cortex during perceptual predictions is finally out in Science Advances! Predicted-but-omitted shapes are represented in CA2/3 and correlate specifically with deep layers of PHC, suggesting feedback. 🧠🟦
Communication of perceptual predictions from the hippocampus to the deep layers of the parahippocampal cortex
High-resolution neuroimaging reveals stimulus-specific predictions sent from hippocampus to the neocortex during perception.
www.science.org
May 22, 2025 at 1:55 AM
Reposted by Fraser Aitken
ofgulban.bsky.social
In vivo reconstruction of Duvernoy's postmortem vasculature images

- Fast, high-res imaging: Whole-brain 0.35 mm MRI in <7 min at 7 T
- Vessel-type specific podt-processing: Capturing large leptomeningeal, pial, and intracortical meso-veins

PDF: doi.org/10.1101/2025...
March 26, 2025 at 8:38 PM
Reposted by Fraser Aitken
theathleticfc.bsky.social
Newcastle United are rolling through the city with their prized possession — the Carabao Cup 🏆
March 29, 2025 at 5:45 PM
Reposted by Fraser Aitken
earlkmiller.bsky.social
Tapping into the Rhythms That Lead to Predictions in the Brain
www.cogneurosociety.org/tapping-into...
#neuroscience
Tapping into the Rhythms That Lead to Predictions in the Brain
André Bastos' work is giving researchers a new window into the brain rhythms that lead to predictive processing.
www.cogneurosociety.org
March 12, 2025 at 1:46 PM
Reposted by Fraser Aitken
dileeplearning.bsky.social
Happy to have this published …https://www.science.org/doi/10.1126/sciadv.adr6698
A detailed theory of thalamic and cortical microcircuits for predictive visual inference
A generative vision model offers a detailed theory for cortical columns, thalamus, and computations in cortical circuits.
www.science.org
February 5, 2025 at 9:38 PM
Reposted by Fraser Aitken
theathleticfc.bsky.social
Nottingham Forest are only the second side in Premier League history to lose a game by 5+ goals and then follow it up by immediately winning their next game in the competition by 5+ goals.

Who was the first?
February 1, 2025 at 2:47 PM
Reposted by Fraser Aitken
layerfmri.bsky.social
New layer-fMRI manuscript describing the predictive processing across layers of auditory areas. By
Lonike Faes et al.
biorxiv.org/lookup/doi/1...
January 16, 2025 at 5:47 PM
Reposted by Fraser Aitken
danielrolphauthor.bsky.social
This holiday season, take a moment to visit your local bookstore. It’s about more than finding a great book—it’s about supporting the small businesses that keep our communities thriving.
December 15, 2024 at 12:41 AM