Peter Kirk
@peterakirk.bsky.social
Neuroscientist & Psychologist at the NIH | Anxiety & Emotional Disorders, Naturalistic Neuroimaging, Physiology, Development | Disclaimer: all views/posts are my own.
Huge shout-out to co-authors (incl. @purnimaqamar.bsky.social), very much a team effort. Big thanks to @csavasegal.bsky.social @esfinn.bsky.social and colleagues, whose prior work (i.e., doi.org/10.1093/cerc...) inspired this study.
Individual differences in neural event segmentation of continuous experiences
Abstract. Event segmentation is a spontaneous part of perception, important for processing continuous information and organizing it into memory. Although n
doi.org
February 3, 2026 at 3:44 PM
Huge shout-out to co-authors (incl. @purnimaqamar.bsky.social), very much a team effort. Big thanks to @csavasegal.bsky.social @esfinn.bsky.social and colleagues, whose prior work (i.e., doi.org/10.1093/cerc...) inspired this study.
Our analyses revealed tripartite associations between anxiety symptoms, participants descriptions of the movie, and brain activity in insula, default mode, and dorsal attention regions. These findings underscore the utility of movie paradigms in research on subjective emotional experiences. 2/2
February 3, 2026 at 3:44 PM
Our analyses revealed tripartite associations between anxiety symptoms, participants descriptions of the movie, and brain activity in insula, default mode, and dorsal attention regions. These findings underscore the utility of movie paradigms in research on subjective emotional experiences. 2/2
Patients with and without anxiety watched an anxiety-inducing movie during fMRI. Afterward, they provided open descriptions of the movies. Their responses underwent natural language processing to quantity semantic content. 1/2
February 3, 2026 at 3:44 PM
Patients with and without anxiety watched an anxiety-inducing movie during fMRI. Afterward, they provided open descriptions of the movies. Their responses underwent natural language processing to quantity semantic content. 1/2
Reposted by Peter Kirk
Outside my expertise, but I'm interested to know the SNR of the CMR02 measurement. Looks highly variable, even more so than BOLD.
December 22, 2025 at 6:30 PM
Outside my expertise, but I'm interested to know the SNR of the CMR02 measurement. Looks highly variable, even more so than BOLD.
This may be relevant? www.nature.com/articles/s41...
Autonomic physiological coupling of the global fMRI signal - Nature Neuroscience
The brain and body are necessarily connected. Here the authors show that brain blood flow and electrical activity are coupled with systemic physiological changes in the body.
www.nature.com
October 2, 2025 at 7:00 PM
This may be relevant? www.nature.com/articles/s41...
This is amazing work Sarah, super interesting!
September 19, 2025 at 12:15 PM
This is amazing work Sarah, super interesting!
Agreed! I'm often excited about cool, emerging fMRI methods which promise a lot. I've preregistered their use with high hopes and things fall flat. Post-hoc, the old methods turn out more sensitive. Obviously there are lots of factors, but it's made me quite hesitant without repeated validation.
September 16, 2025 at 7:09 PM
Agreed! I'm often excited about cool, emerging fMRI methods which promise a lot. I've preregistered their use with high hopes and things fall flat. Post-hoc, the old methods turn out more sensitive. Obviously there are lots of factors, but it's made me quite hesitant without repeated validation.
We had two preprints approved in August (these were submitted in May & July). However, since approval, the web pages are no longer available (e.g., osf.io/byu7f_v1). Is this expected?
September 4, 2025 at 3:06 PM
We had two preprints approved in August (these were submitted in May & July). However, since approval, the web pages are no longer available (e.g., osf.io/byu7f_v1). Is this expected?
Kind of relevant www.biorxiv.org/content/10.1...
The entire brain, more or less, is at work: ‘Language regions’ are artefacts of averaging
Models of the neurobiology of language suggest that a small number of anatomically fixed brain regions are responsible for language functioning. This derives from centuries of aphasia studies and deca...
www.biorxiv.org
July 29, 2025 at 3:04 PM
Kind of relevant www.biorxiv.org/content/10.1...