Nadine Dijkstra's Avatar

Nadine Dijkstra

@nadinedijkstra.bsky.social

PI of the https://imaginerealitylab.org/ @uclbrainscience.bsky.social where we investigate the neural and computational mechanisms of mental imagery and reality monitoring. Activist about mental health and EDI in academia. She/her.

3,581 Followers  |  278 Following  |  195 Posts  |  Joined: 11.09.2023  |  2.2938

Latest posts by nadinedijkstra.bsky.social on Bluesky

Very proud to be part of this team! πŸ€“Our new preprint is out, where we examine how social basis functions develop during adolescence. πŸ₯³πŸ₯³

27.11.2025 23:28 β€” πŸ‘ 12    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
The relative psychometric function: a general analysis framework for relating psychological processes | JOV | ARVO Journals

I think the work by @meganakpeters.bsky.social on psychophysics for subjective experience is exactly what you are looking for, e.g. jov.arvojournals.org/article.aspx...

27.11.2025 14:22 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Ooh, that looks very cool! I'd have to read your paper in more detail, but it reminds me of a recent idea that visual snow could be due to bad reality monitoring: noise in the visual system is incorrectly inferred to reflect reality. Perhaps in your case TMS did the same by adding signal... πŸ€”

27.11.2025 13:41 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Oooh! Is that work published? I'd also like to understand how it all relates each other :D

27.11.2025 11:48 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

All code and data can be found on github.com/lunahuestegg....

27.11.2025 11:05 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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a picture of a woman with the words my imagination has become on the bottom ALT: a picture of a woman with the words my imagination has become on the bottom

We hope that our findings will inspire future researchers to utilise non-invasive brain stimulation to push imagery over the reality threshold, thereby shedding light on the causal mechanisms that distinguish imagination from reality

27.11.2025 11:05 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

The absence of an interaction between imagery and TMS could be due to a number of things: sensory strength might not play a causal role in reality judgments, the early visual cortex might not be the right locus of the sensory strength signal, or we did not have enough power

27.11.2025 11:03 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Our results were a mixed bag: we did find that both TMS to the early visual cortex (compared to vertex TMS) as well as imagining the stimulus increased reports of perceiving the stimulus when nothing was there, but there was no interaction between these two factors

27.11.2025 11:02 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Getting this set-up to work was HARD and I was really impressed by Luna and Cristina’s perseverance into getting this right. They spent days in the TMS lab troubleshooting and trying out different set-ups until we eventually had a protocol that we were happy with

27.11.2025 11:02 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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a colorful brain on a black background with a galaxy in the middle ALT: a colorful brain on a black background with a galaxy in the middle

We applied sub-threshold TMS to the early visual cortex while participants were imagining. Previous research showed that this type of stimulation increases subthreshold sensory signals and thereby increases detection rates, so we reasoned that it might also increase sub-threshold imagery activity

27.11.2025 10:58 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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In this paper, we aimed to test the causal role of sensory strength in distinguishing imagery and perception by using non-invasive brain stimulation (TMS) to increase sensory strength while participants were engaged in a simultaneous imagery and detection task

27.11.2025 10:57 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Subjective signal strength distinguishes reality from imagination - Nature Communications How humans distinguish perception from mental imagery is not well understood. Here, the authors show that reality judgements are based on the intensity of a mixture of imagined and real signals.

We recently proposed that the brain infers that visual experience reflects reality rather than imagination when sensory strength is high enough to cross a β€˜reality threshold’ www.nature.com/articles/s41...

27.11.2025 10:54 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
OSF

I am very excited to share our new preprint, spearheaded by the brilliant @lunahuestegge.bsky.social, w/ @peterkok.bsky.social and others: β€˜An attempt to push mental imagery over the reality threshold using non-invasive brain stimulation’

doi.org/10.31234/osf...

27.11.2025 10:53 β€” πŸ‘ 36    πŸ” 12    πŸ’¬ 3    πŸ“Œ 2

** Recruiting a postdoc ** We are looking for a postdoc to work on emotion, mental health, and interoception, based in London at @ucl.ac.uk in my lab (Clinical and Affective Neuroscience). Part of a large Wellcome Grant (co-led with the brilliant @camillanord.bsky.social)

24.11.2025 12:22 β€” πŸ‘ 81    πŸ” 87    πŸ’¬ 1    πŸ“Œ 1

Thanks, Megan!!!

18.11.2025 16:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

πŸ˜‚πŸ€© Looking forward to it!!!

18.11.2025 16:20 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

πŸ˜‚β™₯️

18.11.2025 10:07 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thanks so much @thetransmitter.bsky.social for this Rising Stars of Neuroscience award! 🀩

And a big thank you to @smfleming.bsky.social for the nomination!!

18.11.2025 09:49 β€” πŸ‘ 87    πŸ” 10    πŸ’¬ 1    πŸ“Œ 4
APA PsycNet

More exciting psychophysics suggesting that imagery instantiates sensory representations through suppression, not activation: psycnet.apa.org/record/2026-....

This paper demonstrated similar effects: pubmed.ncbi.nlm.nih.gov/37782827/

Could this explain decreased activation and increased decoding?

14.11.2025 17:27 β€” πŸ‘ 31    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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Respiration as a dynamic modulator of sensory sampling Respiration dynamically modulates sensory perception by orchestrating transient states of the brain and the body. Using simultaneous recordings of high-density magneto-encephalography (MEG), respirati...

New preprint with amazing work from @nchalas.bsky.social:

How does respiration influence (un-)predictable near-threshold perception? MEG, arousal modulation, excitability states, respiration phase-resolved connectivity changes - it's all there :)

#neuroskyence

www.biorxiv.org/content/10.1...

30.06.2025 12:21 β€” πŸ‘ 43    πŸ” 27    πŸ’¬ 0    πŸ“Œ 0

Very proud to have launched our manifesto and report to make Dutch academia more sustainable - a moment to celebrate after two years of hard work with the Green Young Academy, DJA and many inspiring colleagues

dejongeakademie.nl/en/news/3148...

05.11.2025 19:29 β€” πŸ‘ 24    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0
View from your office onto Giessen and surrounding villages.

View from your office onto Giessen and surrounding villages.

Please repost! I am looking for a PhD candidate in the area of Computational Cognitive Neuroscience to start in early 2026.

The position is funded as part of the Excellence Cluster "The Adaptive Mind" at @jlugiessen.bsky.social.

Please apply here until Nov 25:
www.uni-giessen.de/de/ueber-uns...

04.11.2025 13:57 β€” πŸ‘ 79    πŸ” 97    πŸ’¬ 1    πŸ“Œ 4

Very proud of this great piece of multi-lab work by Kabir & Husta, et al.

Want to measure attention across the visual field (without interfering with ongoing perceptual/attentional processes)? Use RIFT!

Here we share our how-to-RIFT knowledge, including analysis code, quantitative comparisons, ..

29.10.2025 10:58 β€” πŸ‘ 14    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0

This is such a fun idea! A cross-decoding perception-imagery challenge 🀩 Looking forward to seeing what comes out (and maybe having a sneaky go myself when I should be doing admin...)!

24.10.2025 11:42 β€” πŸ‘ 11    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Entorhinal grid-like codes for visual space during memory formation Nature Communications - Eye movements during scene viewing are tied to grid-like codes in the entorhinal cortex. Grid signals are specific to later remembered scenes, covary with activity in...

✨My first first-author paper is out✨
Entorhinal grid-like codes for visual space during memory formation in @natcomms.nature.com ➑️ rdcu.be/eLRm2
Big thanks to everyone β€ͺ@isabellacwagner.bsky.social‬, @tobiasstaudigl.bsky.social, @olejensen.bsky.social, @doellerlab.bsky.social, @clauslamm.bsky.social

20.10.2025 16:42 β€” πŸ‘ 62    πŸ” 24    πŸ’¬ 2    πŸ“Œ 1
OSF

Consciousness science as a marketplace of rationalizations

my commentary on @smfleming.bsky.social and @matthiasmichel.bsky.social's thought-provoking BBS paper, and more generally about the field.

osf.io/preprints/ps...

10.10.2025 18:05 β€” πŸ‘ 44    πŸ” 18    πŸ’¬ 2    πŸ“Œ 3

It's all in the paper 😊

03.10.2025 13:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Interesting new preprint on the subjective experience of imagery. Does it even make sense to describe it as 'seeing', and what does a high vividness score indicate? Really great to see a push towards better characterisation of what people actually experience during imagery!

03.10.2025 13:31 β€” πŸ‘ 21    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

Awesome work by @jorge-morales.bsky.social and team, using LLMs to suggest that propositional reasoning might be enough to solve classic imagery tasks! ✨

01.10.2025 06:32 β€” πŸ‘ 17    πŸ” 7    πŸ’¬ 2    πŸ“Œ 1
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Artificial Phantasia: Evidence for Propositional Reasoning-Based Mental Imagery in Large Language Models This study offers a novel approach for benchmarking complex cognitive behavior in artificial systems. Almost universally, Large Language Models (LLMs) perform best on tasks which may be included in th...

Imagine an apple 🍎. Is your mental image more like a picture or more like a thought? In a new preprint led by Morgan McCartyβ€”our lab's wonderful RAβ€”we develop a new approach to this old cognitive science question and find that LLMs excel at tasks thought to be solvable only via visual imagery. 🧡

01.10.2025 01:26 β€” πŸ‘ 114    πŸ” 36    πŸ’¬ 5    πŸ“Œ 8

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