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Petar Raykov

@praykov.bsky.social
337 followers 96 following 9 posts

Cognitive Neuroscientist interested in memory and aging www.petarraykov.com

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Petar Raykov @praykov.bsky.social · 10/07/2026
In our new paper we use 2 fMRI studies to put SLIMM to the test. We find the U-shape function of memory and expectancy, yet no differential hippocampal involvement at the different ends of the expectancy spectrum - highlighting the need to revisit SLIMM. doi.org/10.1098/rstb...
doi.org
Predictions and declarative memory encoding: two fMRI paradigms provide slim pickings for SLIMM
Abstract. Memory is often better for both highly unexpected and highly expected information. To explain this U-shape relationship between memory and expect
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Dominika Varga @dkvarga.bsky.social · 04/09/2025
So happy to share our paper on the role of the hippocampus as a mismatch detector: doi.org/10.1073/pnas... We show that the hippocampus detects mismatches between ongoing experiences and episodic memories but not generalised schematic knowledge. See 🧵for how we got here: #neuroskyence #PsychSciSky
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MRC Cognition and Brain Sciences Unit, University of Cambridge @mrccbu.bsky.social · 01/09/2025
New fMRI study shows the hippocampus signals mismatches only when our expectations are based on episodic memories — not general knowledge. Challenges theories of the hippocampus as a domain-general comparator. We also explore how brain networks respond to surprise: doi.org/10.1101/2025...
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Cam-CAN @camcan-2010.bsky.social · 29/08/2025
New CamCAN study led by @praykov.bsky.social used 11 different white matter (WM) measures to show that WM health is multidimensional: 4 latent MRI-derived factors explained 89% of WM variance, were predicted by vascular health, and predicted cognition: doi.org/10.1038/s415...
doi.org
Complementary MR measures of white matter and their relation to cardiovascular health and cognition - Scientific Reports
Scientific Reports - Complementary MR measures of white matter and their relation to cardiovascular health and cognition
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Petar Raykov @praykov.bsky.social · 28/02/2025
We recently published a new paper investigating APOE effects in Cam-CAN @camcan-2010.bsky.social movie dataset. Examining various measures we failed to find any APOE effects in healthy individuals. You can read more about it in the paper doi.org/10.1177/2398... or the thread below
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Edwin Dalmaijer @dalmaijer.bsky.social · 16/12/2024
Would you like to learn Python to create experiments and do analyses? BUY OUR BOOK! www.routledge.com/products/978... This is a new edition for Python 3, with #PsychoPy chapters by @hirstrj.bsky.social and @peircej.bsky.social from @psychopy.org #cogneuro #psychology #Python #programming
routledge.com
Python for Experimental Psychologists: A Fun Way of Learning How to Code Your Experiments and Analyses
Python for Experimental Psychologists equips researchers who have no prior programming experience with the essential knowledge to independently script experiments and analyses in the programming langu...
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Rik Henson @rhens.bsky.social · 31/01/2024
Join us for another two weeks of Cognitive Neuroimaging Skills Training In Cambridge, #COGNESTIC, 16-27 September, 2024. We provide training in state-of-the-art methods for open neuroimaging analysis, focussing on MRI, fMRI and EEG/MEG. www.mrc-cbu.cam.ac.uk/events/cogne...
mrc-cbu.cam.ac.uk
cognestic-2024
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Aidan Horner @aidanhorner.bsky.social · 27/03/2024
Very excited that @akulsatish.bsky.social's MEG paper on spatial representations and theta/alpha is officially published in Hippocampus! Theta and alpha oscillations in human hippocampus and medial parietal cortex support the formation of location-based representations #neuroskyence #psychscisky
onlinelibrary.wiley.com
Theta and alpha oscillations in human hippocampus and medial parietal cortex support the formation of location‐based representations
Hippocampus is an international neuroscience journal exploring the hippocampal formation and its interactions with other brain regions.
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Laura Ana Bustamante, PhD @lauraabusta.bsky.social · 26/01/2024
I'm elated to share my PhD keystone paper published @PNAS www.pnas.org/doi/10.1073/... I've poured my heart & soul into this project since 2016 (8 yrs!) & I'm happy to introduce the Effort Foraging Task to the world #CognitivePsychology #Motivation #Effort #Foraging #DecisionMaking 🧵
Figure 1: Foraging trial diagram. On each trial participants chose to harvest the tree they were at (down arrow key) or travel to a new tree (right arrow key), during the travel they completed an effortful task, after which they arrived at a new patch with a replenished supply of apples. The tree is a green circle and rectangular brown trunk. The apples are red and lined up in a row on the bottom of the screen. There is a warrior avatar with a shield, helmet, and sword who jumps to harvest the apples.
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Alexa Morcom @alexamorcom.bsky.social · 26/01/2024
PhD funding alert! A second round of up to 4 School of UK + International Psychology studentships at Sussex this year - deadline 15th Feb. Application FAQ: t.ly/ZLoEJ - contact potential supervisor/s first to check fit! For my lab, episodic memory + ageing #neuroskyence #cognition #psychscisky
Decorative shiny brain image
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Petar Raykov @praykov.bsky.social · 11/12/2023
Check out our new paper showing that functional system segregation in fMRI predicts fluid intelligence, but does not meditate the benefits midlife activities have on late life intelligence doi.org/10.1016/j.ne...
doi.org
Redirecting
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Norman Lab @ptoncompmemlab.bsky.social · 23/10/2023
Now out in Cognitive Science! We use GPT-2 to show that Bayesian surprise, which tracks changes in the content and confidence of predictions, accounts for human event boundaries in a narrative better than surprisal, which only tracks the predicted probability of individual words tinyurl.com/kd9dpub8
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