Pieter Barkema
@pieterbarkema.bsky.social
PhD in Neuroscience of Perception @ FIL (UCL)
Developer of PCNportal for individual (normative) brain modelling: https://pcnportal.dccn.nl/.
Developer of PCNportal for individual (normative) brain modelling: https://pcnportal.dccn.nl/.
Reposted by Pieter Barkema
Hellohello #ICON2025! Please come and have a chat with me today at 10.45am about some content-specific alpha fluctuations! 🤓
Finally, on Friday at 10:45, we have Imagine Reality Lab affiliate @dotproduct.bsky.social presenting:
P6.36 | Pre-stimulus Shape Predictions Fluctuate At Alpha Rhythms And Bias Subsequent Perception.
Showing how content-specific pre-stimulus alpha-band oscillations influence perception.
P6.36 | Pre-stimulus Shape Predictions Fluctuate At Alpha Rhythms And Bias Subsequent Perception.
Showing how content-specific pre-stimulus alpha-band oscillations influence perception.
September 19, 2025 at 8:15 AM
Hellohello #ICON2025! Please come and have a chat with me today at 10.45am about some content-specific alpha fluctuations! 🤓
Are you at CCN? Come check out our poster on how the brain does postdiction (post-hoc perception). We have multisensory illusions, retinotopy and 7T layer fMRI! Spoiler: visual cortex does more than you think. Friday 2:00-5:00. Poster C111. With @peterkok.bsky.social and @jhaarsma.bsky.social.
August 13, 2025 at 2:41 PM
Are you at CCN? Come check out our poster on how the brain does postdiction (post-hoc perception). We have multisensory illusions, retinotopy and 7T layer fMRI! Spoiler: visual cortex does more than you think. Friday 2:00-5:00. Poster C111. With @peterkok.bsky.social and @jhaarsma.bsky.social.
Reposted by Pieter Barkema
Go attend @dotproduct.bsky.social's talk about oscillating predictions in the visual cortex tomorrow afternoon! @meguki2025.bsky.social #neuroskyence
Hellohello again! Tomorrow at 5:15pm I’m giving a short talk on our latest MEG study about our very well-loved oscillating perceptual predictions @meguki2025.bsky.social. Come by and talk brains!
There are amazing talks and very cool science happening all around! MEGUKI 2025👌
There are amazing talks and very cool science happening all around! MEGUKI 2025👌
Programme – MEG UKI
meguk.ac.uk
July 16, 2025 at 9:10 PM
Go attend @dotproduct.bsky.social's talk about oscillating predictions in the visual cortex tomorrow afternoon! @meguki2025.bsky.social #neuroskyence
Reposted by Pieter Barkema
Out now @cp-trendscognsci.bsky.social, w/ @akalt.bsky.social & @drmattdavis.bsky.social.
Are sensory sampling rhythms fixed by intrinsically-determined processes, or do they couple to external structure? Here we highlight the incompatibility between these accounts and propose a resolution [1/6]
Are sensory sampling rhythms fixed by intrinsically-determined processes, or do they couple to external structure? Here we highlight the incompatibility between these accounts and propose a resolution [1/6]
June 19, 2025 at 11:18 AM
Out now @cp-trendscognsci.bsky.social, w/ @akalt.bsky.social & @drmattdavis.bsky.social.
Are sensory sampling rhythms fixed by intrinsically-determined processes, or do they couple to external structure? Here we highlight the incompatibility between these accounts and propose a resolution [1/6]
Are sensory sampling rhythms fixed by intrinsically-determined processes, or do they couple to external structure? Here we highlight the incompatibility between these accounts and propose a resolution [1/6]
Reposted by Pieter Barkema
The beta release of SPM-Python is out now! Amazing work by Johan Medrano @johmedr.bsky.social , Yael Balbastre, Yulia Bezsudnova @ybezs.bsky.social and other members of their team. A new era for SPM! #OHBM2025
Drumroll... The SPM team will announce that SPM is now fully accessible from Python! 🐍 Learn more about SPM-Python at the SPM roundtable event (Friday, 1pm) and poster number 1841 at #OHBM2025. Try the beta for yourself at github.com/spm/spm-python [2/7]
GitHub - spm/spm-python: The Python interface to SPM
The Python interface to SPM. Contribute to spm/spm-python development by creating an account on GitHub.
github.com
June 23, 2025 at 8:22 AM
The beta release of SPM-Python is out now! Amazing work by Johan Medrano @johmedr.bsky.social , Yael Balbastre, Yulia Bezsudnova @ybezs.bsky.social and other members of their team. A new era for SPM! #OHBM2025
Reposted by Pieter Barkema
New MEG paper by @jhaarsma.bsky.social and @dotproduct.bsky.social! Same design and behavioural results as our 7T layer fMRI study (www.jneurosci.org/content/43/4...), but now shedding light on the temporal dynamics of the sensory signals underlying false percepts. #neuroskyence
Shared and diverging neural dynamics underlying false and veridical perception
We often mistake visual noise for meaningful images, which sometimes appear as convincing as veridical percepts. This suggests considerable overlap between the mechanisms that underlie false and verid...
www.jneurosci.org
June 10, 2025 at 9:27 AM
New MEG paper by @jhaarsma.bsky.social and @dotproduct.bsky.social! Same design and behavioural results as our 7T layer fMRI study (www.jneurosci.org/content/43/4...), but now shedding light on the temporal dynamics of the sensory signals underlying false percepts. #neuroskyence
Reposted by Pieter Barkema
New research from @uclqsion.bsky.social reveals how our brains predict what we’re about to see—before it even happens.
Senior author Prof @peterkok.bsky.social said: "This predictive function may be essential not only for perception but for decision-making and learning."
Senior author Prof @peterkok.bsky.social said: "This predictive function may be essential not only for perception but for decision-making and learning."
Researchers reveal how our brains predict what we’re about to see
Researchers in the UCL Queen Square Institute of Neurology find that the hippocampus sends signals to the visual cortex to predict what we are about to see.
buff.ly
June 9, 2025 at 10:08 AM
New research from @uclqsion.bsky.social reveals how our brains predict what we’re about to see—before it even happens.
Senior author Prof @peterkok.bsky.social said: "This predictive function may be essential not only for perception but for decision-making and learning."
Senior author Prof @peterkok.bsky.social said: "This predictive function may be essential not only for perception but for decision-making and learning."
Reposted by Pieter Barkema
🚨 MEG-UKI abstract submission is closing soon! 🚨
If you're an ECR who hasn’t yet had the chance to present your PhD work in full, and it deserves the spotlight, we’re offering 20-minute keynote-style talks. Don’t miss this opportunity to share your important research!
If you're an ECR who hasn’t yet had the chance to present your PhD work in full, and it deserves the spotlight, we’re offering 20-minute keynote-style talks. Don’t miss this opportunity to share your important research!
Deadline approaching, only 6 days left!
Follow the link below to submit your abstract:
meguk.ac.uk/abstract-sub...
Follow the link below to submit your abstract:
meguk.ac.uk/abstract-sub...
May 19, 2025 at 5:20 PM
🚨 MEG-UKI abstract submission is closing soon! 🚨
If you're an ECR who hasn’t yet had the chance to present your PhD work in full, and it deserves the spotlight, we’re offering 20-minute keynote-style talks. Don’t miss this opportunity to share your important research!
If you're an ECR who hasn’t yet had the chance to present your PhD work in full, and it deserves the spotlight, we’re offering 20-minute keynote-style talks. Don’t miss this opportunity to share your important research!
Reposted by Pieter Barkema
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
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. 🧠🟦
Reposted by Pieter Barkema
This was looooads of fun! Thank you so much everyone for the amazing and interesting chats.🫶
Also @pieterbarkema.bsky.social has a very cool talk on Monday @ 11.15am on some yummy layer-specific fMRI of postdictive perception.🙀 #VSS2025
Also @pieterbarkema.bsky.social has a very cool talk on Monday @ 11.15am on some yummy layer-specific fMRI of postdictive perception.🙀 #VSS2025
Hellohello! Come say hi today, 3:00-5:00pm, Banyan Breezeway (16.322).
How does the brain hold onto predictions before something even happens? We show that predicted shape info lives in pre-stimulus alpha-band oscillations (10–11Hz), and biases perception without boosting sensitivity.🧠
#VSS2025
How does the brain hold onto predictions before something even happens? We show that predicted shape info lives in pre-stimulus alpha-band oscillations (10–11Hz), and biases perception without boosting sensitivity.🧠
#VSS2025
Looking forward to #VSS2025! On the first day, @dotproduct.bsky.social sky.social will be presenting a poster on how predictions embedded in alpha oscillations modulate perception of noisy stimuli. Come one, come all! Poster 16.322, Friday 3-5pm, Banyan Breezeway. #neuroskyence #visionscience
May 17, 2025 at 1:52 PM
This was looooads of fun! Thank you so much everyone for the amazing and interesting chats.🫶
Also @pieterbarkema.bsky.social has a very cool talk on Monday @ 11.15am on some yummy layer-specific fMRI of postdictive perception.🙀 #VSS2025
Also @pieterbarkema.bsky.social has a very cool talk on Monday @ 11.15am on some yummy layer-specific fMRI of postdictive perception.🙀 #VSS2025
Reposting for all my 7 loyal followers. Come see our cool results on visual cortex encoding perception even when it is constructed in hindsight! Monday morning in the Multisensory Session at 10:45 - 12:15 - 3rd speaker.
Tomorrow morning @pieterbarkema.bsky.social will present our 7T fMRI study revealing neural correlates of a postdictive illusion in V1. Very exciting about these results, feedback & Qs welcome! Talk 42.23 in session on multisensory processing, 10:45am - 12:15pm #VSS2025 #neuroskyence #visionscience
May 18, 2025 at 6:59 PM
Reposting for all my 7 loyal followers. Come see our cool results on visual cortex encoding perception even when it is constructed in hindsight! Monday morning in the Multisensory Session at 10:45 - 12:15 - 3rd speaker.