John Greenwood

Happy Fechner Day, to those who celebrate

GitHub - scienceanna/visual_foraging_exp: Visual foraging experiment in PsychoPy Visual foraging experiment in PsychoPy. Contribute to scienceanna/visual_foraging_exp development by creating an account on GitHub.

If you're a #visionscience or #psychscisky person starting to think about student dissertation projects, you might be interested in our visual search/foraging experiment code at github.com/scienceanna/.... You can configure everything via CSV files (lots of options!) and it all runs on Psychopy.

Thanks Pascal!

Looking forward to Paris though!

Does that mean there's already a 2027 location as well, or do we get a year off? :)

A Mucha-style painting showing the Eiffel Tower at sunset with ECVP 50 2028 Paris written

As #ECVP2025 wraps up, I’m delighted that #ECVP2028 in Paris was accepted at the Business Meeting! ECVP will meet again before but the Parisian organizing committee is already planning an unforgettable 50th anniversary!

Enjoying this 1884 paper by CS Peirce and Joseph Jastrow on whether perception exhibits a hard threshold - the idea that as stimulus intensity increases, at some value it goes from unconscious to conscious, rather than following a smooth probabilistic curve. psychclassics.yorku.ca/Peirce/small...

Reduced susceptibility to experimentally-induced complex visual hallucinations with age Visual hallucinations occur across many clinical conditions, but can also be induced experimentally in healthy individuals, using high-frequency flick…

Very happy that our study looking at complex hallucination proneness across the lifspan is new out in Cortex! @georgiamneuro.bsky.social @mlisi.bsky.social @jagreenwood.bsky.social @thelablab.bsky.social @tessamdekker.bsky.social

www.sciencedirect.com/science/arti...

Excited to share our new preprint...

...𝑖𝑡'𝑠 𝑎𝑏𝑜𝑢𝑡 𝑡𝑖𝑚𝑒! ⏳

We find temporal confounds in fMRI that emulate neural patterns of perceptual learning.

These can be hard to spot with conventional RSA, but may influence our understanding of how prior knowledge shapes perception.

tinyurl.com/4bwy6nre

JOB ALERT: Computational Cognitive Neuroscience Postdoc position in Osaka, Japan! Possible start in October 2025 (contact me ASAP), or from April 2026. PLEASE REPOST! #postdocjobs #neuroskyence #neuroscience #psychscisky #compneurosky #neurojobs 1/

The University of Sydney is recruiting senior and mid-career academics "within the top 5–10% of academics in their field, with a strong track record and availability to relocate to Australia within 6-months".
If you're a psychologist/neuroscientist and are interested, get in touch with me soon.

How the brain separates real images from those it imagines Neuroscientists have found the regions that keep them apart.

Cool article about our recent paper by @nature.com 🤩 @peterkok.bsky.social, @smfleming.bsky.social www.nature.com/articles/d41...

Photograph of The Young Gods, with a cracked and shot up surface effect.

Franz Treichler guides David Stubbs through the archives of the Swiss trio who repurposed the sampler to give rock a new, industrial lease of life in the 1980s, before venturing into space influenced by ambient and techno

The Strange World Of… The Young Gods

buff.ly/lRU8gbM

I am so excited to share that our paper 'A neural basis for distinguishing imagination from reality' is now published in @cp-neuron.bsky.social! 🧠✨ See thread below! doi.org/10.1016/j.ne...

Reduced susceptibility to experimentally-induced complex visual hallucinations with age Visual hallucinations occur across many clinical conditions, but can also be induced experimentally in healthy individuals, using high-frequency flicker (Ganzflicker) and sensory deprivation (Ganzfeld...

The second study of my PhD is out as a preprint, exploring experimentally-induced hallucination proneness across the lifespan! w/ Laura Haye @georgiamneuro.bsky.social @mlisi.bsky.social @jagreenwood.bsky.social l @thelablab.bsky.social @tessamdekker.bsky.social
www.biorxiv.org/content/10.1...

Current mood

This university bookstore is a giant Stroop test

I’m excited to announce that I’m recruiting for a fully-funded 3.5-year PhD position in my lab in Southampton (UK). For details and to apply, see here: www.southampton.ac.uk/study/postgr...

A graphic for the Marie Skłodowska-Curie Actions (MSCA), showing a historical portrait of Marie Skłodowska-Curie overlaid with an image of four young researchers walking down a hallway. The European Commission logo is in the top left. Text reads: "Marie Skłodowska-Curie Actions – €404.3 million to support postdoctoral researchers”

Choose Science. Choose Europe.

A new Marie Skłodowska-Curie Actions Postdoctoral Fellowships 2025 call is now open.

With a budget of €404.3 million, it will support around 1,650 researchers from Europe and beyond.

Apply by 10 September → europa.eu/!fBTMgF

🚨 Two open faculty positions in Cognitive Psychology (incl. visual perception) at University of Southern Denmark! 🚨
#PsychSciSky
#VisionScience
#neuroskyence
#compneurosky

Dutch academia at a crossroads: Academic communities - not politicians - should decide teaching languages. Language barriers will damage world-class psychology programs. International education breeds innovation and develops future talent. Please consider supporting #AcademicFreedom !

Ten principles for reliable, efficient, and adaptable coding in psychology and cognitive neuroscience - Communications Psychology Programming is essential for modern research in neuroscience and psychology, but it can quickly become a source of frustration and error. This Primer introduces ten practical principles guiding resear...

Many processes from industry are not appropriate or overkill for an academic setting, but we can and should be doing better than we currently are.

Our paper tries to give practical advice on how you can improve your scientific workflow, without being a coding guru.

www.nature.com/articles/s44...

Visual Language Models show widespread visual deficits on neuropsychological tests Visual Language Models (VLMs) show remarkable performance in visual reasoning tasks, successfully tackling college-level challenges that require high-level understanding of images. However, some recen...

If GPT-4o walked into a neuro-opthalmology clinic, what would it be diagnosed with?

Here we administered 51 tests from 6 clinical and experimental batteries to assess vision in commercial AI models.

Very proud to share this first work from @genetang.bsky.social's PhD!

arxiv.org/abs/2504.10786

The three stages of responding to referee comments:

Draft 1: letting it rip.
Draft 2: removing all the rip.
Draft 3: adding a dash of courteous language that would not be out of place in the gentile drawing rooms of Bridgerton.

The development of visual acuity and crowding: Finding the balance between fine detail and 'gist' processing https://www.biorxiv.org/content/10.1101/2025.03.27.645750v1

Cognitive scientists who work across levels of analysis should be called Marr's Rovers

Lecturer in Computational Cognition at UCL Explore an exciting academic career as a Lecturer in Computational Cognition. Don't miss out on other academic jobs. Click to apply and explore more opportunities.

Come join us at Experimental Psychology at University College London - we're looking for a lecturer in computational cognition. Great place to work!

www.jobs.ac.uk/job/DML927/l...

Practical Vision Science: Learning Through Experimentation This workbook provides a collection of experiments and observations that use physical materials (rather than digital displays or resources) to reveal fundamental properties of the human visual system....

Hey there #visionscience and #psychscisky friends! I wanted to take a moment to (finally) do a proper promo 🧵 about my new textbook: Practical Vision Science, which is now available from Routledge books. <1/n> www.routledge.com/Practical-Vi...

Lecturer in Computational Cognition at UCL Explore an exciting academic career as a Lecturer in Computational Cognition. Don't miss out on other academic jobs. Click to apply and explore more opportunities.

Come join us at Experimental Psychology at University College London - we're looking for a lecturer in computational cognition. Great place to work!

www.jobs.ac.uk/job/DML927/l...

Hey @vssmtg.bsky.social, do you no longer support diversity and inclusion? Looks like your policies were quietly removed from your website? #VSS2025 #VSS