Petar Raykov

Petar Raykov

@praykov.bsky.social

Cognitive Neuroscientist interested in memory and aging https://www.petarraykov.com/

337 followers97 following9 posts

Petar Raykov
@praykov.bsky.social

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.orgPredictions and declarative memory encoding: two fMRI paradigms provide slim pickings for SLIMMAbstract. 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

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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Cam-CAN
@camcan-2010.bsky.social

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.orgComplementary MR measures of white matter and their relation to cardiovascular health and cognition - Scientific ReportsScientific Reports - Complementary MR measures of white matter and their relation to cardiovascular health and cognition
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Petar Raykov
@praykov.bsky.social

Our lab and others have shown that the brain regions that are active when we watch movies overall with regions that are damaged by Alzheimer’s disease. In this study we used MRI brain imaging data collected from 425 people while they watched a short Alfred Hitchcock movie.

Petar Raykov
@praykov.bsky.social

Importantly, we showed that there were no differences between adults with/without the APOE4 gene. We focused on univariate and connectivity differences during event boundaries; But also examined full-movie/ whole brain functional connectivity and graph-theoretical measures like system-segregation.

Petar Raykov
@praykov.bsky.social

Apolipoprotein E e4 (APOE4) is a significant genetic risk factor for Alzheimer’s disease. However, it is not known whether there are differences in the brains of healthy adults who carrying the APOE4 gene.

Petar Raykov reposted

Edwin Dalmaijer
@dalmaijer.bsky.social

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.comPython for Experimental Psychologists: A Fun Way of Learning How to Code Your Experiments and AnalysesPython 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...

Petar Raykov reposted

Alexa Morcom
@alexamorcom.bsky.social

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

Petar Raykov reposted

Norman Lab
@ptoncompmemlab.bsky.social

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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