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Dirk Bernhardt-Walther

@dirkbwalther.bsky.social
628 followers 509 following 70 posts

Professor of Psychology University of Toronto, scene perception by humans and machines, visual aesthetics. bwlab.org

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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 24/09/2026
Contours not only drive neural selectivity but also human behavior. The Tilt Aftereffect in natural scenes is driven by contours, not filter-based information! New article by Seohee Han and James Lochbichler in @cognitionjournal.bsky.social. doi.org/10.1016/j.co... @uoftpsychology.bsky.social
Scene tilt aftereffects (Experiment 5). Left: Psychometric functions for ContourPos, FilterPos, and NoAdaptation conditions in the blocked condition. Right: Baseline-corrected PSEs for ContourPos and FilterPos.
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 18/09/2026
I've arrived in Kyoto ⛩️ for my full-year sabbatical. Hit me up if you're in this part of the world and would like to meet up!
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Adrian Nestor @adriannestor.bsky.social · 15/07/2026
Congratulations to @moazshoura.bsky.social on successfully defending his PhD! Thanks to @ccnlab.bsky.social, Kang Lee, @drmack.bsky.social, Jon Cant and @dirkbwalther.bsky.social for their thoughtful questions and feedback. Pictured here with Jon Cant and @drmack.bsky.social after the defense
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Roxana Zeraati @roxana-zeraati.bsky.social · 07/07/2026
Our paper "Neural timescales from a computational perspective" is finally out in @natneuro.nature.com: www.nature.com/articles/s41... We discuss how computational models and methods can distill empirical observations on neural timescales into quantitative, testable theories of brain computation.
nature.com
Neural timescales from a computational perspective - Nature Neuroscience
This review integrates computational approaches to provide a unified view on how data analysis methods, biophysical mechanistic models and machine learning approaches can help to uncover the origins a...
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keisukefukuda.bsky.social @keisukefukuda.bsky.social · 10/07/2026
The first preprint of the UNSTOPPABLE @mahveenmubarak.bsky.social ! What an “unpredictable” ride it has been and I’m excited (and a bit scared) for what she is gonna discover when she “starts” her graduate program this fall!
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Tess Forest @tessforest.bsky.social · 24/06/2026
I'm starting a lab at the University of Notre Dame! 🎉🍀🧠 Doors open Jan 2027. I'm most excited to meet my future students (recruiting psych grad students for 2027!), help grow a budding neuroscience area, and head home to the midwest after many years away. Please reach out! @notredame.bsky.social
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 10/07/2026
How can aesthetic pleasure be shaped by so many visual attributes: prototypicality, fluency, complexity, symmetry, and self-relevance? I argue that aesthetic pleasure emerges from a balance between categorization-based rewards and metabolic costs of neural activity. doi.org/10.1016/j.co...
Perceptual reward as the result of multiple micro-rewards along the visual processing hierarchy. Micro-rewards may arise, for instance, from the processing of orientation in area V1, motion in the Medial Temporal area (MT), simple shapes and grouping rules in V4, objects in the Lateral Occipital Complex (LOC), faces in the Fusiform Face Area (FFA), scenes in the Parahippocampal Place Area (PPA), or the processing of abstract categories in Prefrontal Cortex (PFC).Aesthetic liking as a trade-off between perceptual reward from categorization and metabolic cost. a. The experienced pleasure from a stimulus (thick black line) is derived from the combination of perceptual reward (thin black line) and metabolic cost (dashed line), resulting in an inverted U-shaped curve.Expertise moves this curve (solid line) to the right (dotted line), fatigue to the left (dashed line). Stimuli that are enjoyed in the baseline condition (circles) are enjoyed less when fatigued because they would overwhelm the visual system. Simple stimuli that are enjoyable when fatigued (triangles) are liked less in the baseline condition because they are boring and do not provide sufficient perceptual reward. Experts would not draw much pleasure from stimuli enjoyed in the baseline condition (circles) but appreciate more complex stimuli (squares), which would be too overwhelming in the baseline condition.
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University of Toronto Psychology @uoftpsychology.bsky.social · 22/05/2026
“Design can be informed by user preferences, and research can benefit from more ecological validity, from actually being in a space,” says @dirkbwalther.bsky.social @utoronto.ca. “This is potentially game-changing.” 🗼 www.psych.utoronto.ca/news/neurosc...
A dancer performs at the launch of Suffused Blossom #8, a piece of "emotive architecture" designed by neuroscientists and architects to study the emotional responses people have when interacting with physical structures.
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Ben Balas @bjbalas.bsky.social · 04/11/2024
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...
routledge.com
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....
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Martin Hebart @martinhebart.bsky.social · 19/05/2026
We are excited to open the re:vision initiative, a community-driven initiative for replicating and generalizing findings in visual neuroscience, based on the LAION-fMRI dataset. re-vision-initiative.org Why this initiative and why would you want to participate? 🧵
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 14/05/2026
For the first time in many years our lab won't attend @vssmtg.bsky.social. We don't feel safe and welcome traveling to the USA at the moment. We are attending CSBBCS and @ecvp.bsky.social instead. We are sorry to miss our friends and colleagues at VSS! Hope to see you in Seattle next year!
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Penn Center for Neuroaesthetics @pcfn.bsky.social · 07/05/2026
Day 1 at @iaea-jena2026.bsky.social has been a blast! 3x talks from our group - facial aesthetics, a new inclusive measure of aesthetic engagement, and harnessing the power of AI to assess qualitative responses. Today - catch @hannahmerseal.bsky.social’s talk in the “Aesthetic Brains” session 🧠🎨
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 24/04/2026
TASC 2026 was a big success! Thanks to invited speakers Kalina Christoff Hadjiilieva @psych.ubc.ca and Gerald Cupchik @utsc.utoronto.ca for their interesting presentations and David Rokeby @utoronto.ca for the Voice Scroll installation. www.linkedin.com/feed/update/... @uoftpsychology.bsky.social
linkedin.com
Dozens of scientists, scholars, and artists came together last week at the University of Toronto&#39;s University College for the second edition of the Toronto Aesthetics Sciences and Creativity… | Un...
Dozens of scientists, scholars, and artists came together last week at the University of Toronto's University College for the second edition of the Toronto Aesthetics Sciences and Creativity Conferenc...
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 04/04/2026
Creativity and aesthetics have long been studied as two independent topics, and yet there is growing recognition of the reciprocal ties that bind them together. A new Research Topic aims to advance a scientific understanding of the interconnections. www.frontiersin.org/research-top... Please repost!
frontiersin.org
Frontiers | Exploring the Connections Between Creativity and Aesthetics
Creativity and aesthetics have long been studied as two largely independent fields. Despite this separation, there is growing recognition of the reciprocal t...
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 31/03/2026
Our brains cling to stability: when scenes slowly change, people still see the original for longer than expected. This AI-image study shows that perception lags behind reality -our minds favor continuity over constant reprocessing. doi.org/10.1037/xhp0... @uoftpsychology.bsky.social
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U of T Faculty of Arts & Science @artsci.utoronto.ca · 30/03/2026
#UofTArtSci psychologist Katy Tam has found that smartphones actually create more boredom. Tam's Life Hacks Research Lab provides evidence-based advice to those struggling with digital distraction. Read more: bit.ly/47qGup6
Katy Tam
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Kaiser Lab @dkaiserlab.bsky.social · 26/02/2026
10 PhD positions at JLU Giessen in the new Research Training Group "PIMON"! We will explore how humans perceive and interact with materials and objects in natural environments. More information on the project, the PIs, and how to apply here: www.uni-giessen.de/de/ueber-uns... Please share!
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Asaf Gilboa @agilboa.bsky.social · 24/02/2026
New paper from our team led by the incredibly talented Dr. Erik Wing (with Jordan Chad, Geneva Mariotti and @drjenryan.bsky.social). www.jneurosci.org/content/earl...
jneurosci.org
The tuned cortex: Convergent expertise-related structural and functional remodeling across the adult lifespan
Neuroplasticity is a defining property of the brain. Structural and functional brain changes arise soon after learning and are particularly evident following years of practice that underpin expert per...
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Tom Wallis @tsawallis.bsky.social · 23/02/2026
**Postdoc position in human category learning** @thecharleywu.bsky.social, Frank Jäkel and I are seeking a postdoctoral fellow to lead a joint project on human category learning at the Centre for Cognitive Science @tuda.bsky.social. www.career.tu-darmstadt.de/tu-darmstadt...
career.tu-darmstadt.de
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Anna Shafer-Skelton @ashaferskelton.bsky.social · 17/02/2026
Excited that this work with @serences.bsky.social and @timbrady.bsky.social is now out! Our Gabor-wavelet model better predicted voxel responses in scene regions than 3D models. Does this mean that scene areas aren’t “for” processing 3D scene structure? NO, we argue. 1/ dx.plos.org/10.1371/jour...
dx.plos.org
A 2D Gabor-wavelet baseline model out-performs a 3D surface model in scene-responsive cortex
Author summary To gain a more complete picture of human visual processing, it is critical to understand the precise format of representations of naturalistic visual scenes. Recent work has approached ...
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Michelle Greene @mgreenephd.bsky.social · 07/02/2026
🚨Job alert! I'm recruiting a postdoc! If you want to study the time course of task-driven visual perception, please reach out! #neuroskyence #VisionScience #CogSci barnard.wd1.myworkdayjobs.com/en-US/Facult...
barnard.wd1.myworkdayjobs.com
Postdoctoral Research Fellow, Cognitive/Computational Neuroscience
If you are a current Barnard College employee, please use the internal career site to apply for this position. Job: Postdoctoral Research Fellow, Cognitive/Computational Neuroscience The Barnard Visua...
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 09/02/2026
Population receptive field size in scene-selective visual cortex is related to the anterior-posterior organization. Spatial frequency preference is NOT related to pRF size! New results by Charlotte Leferink and @damianoc.bsky.social: doi.org/10.1162/IMAG... @uoftpsychology.bsky.social @utoronto.ca
Organization of average size of receptive field in the Parahippocampal Place Area.
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Imaging Neuroscience @imagingneurosci.bsky.social · 30/01/2026
New paper in Imaging Neuroscience by Charlotte A. Leferink, Claudia Damiano, and Dirk B. Walther: Population receptive field size does not correspond to spatial frequency processing in scene-selective cortex doi.org/10.1162/IMAG...
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Visual Attention Lab (Wolfe Lab) @visualattentionlab.bsky.social · 09/02/2026
❕Job opening alert❕We are looking for a new post-bac Research Assistant to join the Visual Attention Lab! See the link for job description and how to apply search.bwh.harvard.edu/new/staff_fi...
search.bwh.harvard.edu
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Lexi Decker @lexidecker.bsky.social · 23/01/2026
❗New Paper❗Is children's attention more like a spotlight that darts across time, or one that diffuses across many things at once? How might children's immature attention help their learning? Our Dev Sci Paper has answers! 🧵🎯 pubmed.ncbi.nlm.nih.gov/41549519/
media.tenor.com
a woman stands in front of a crowd on a stage with a lot of lights
ALT: a woman stands in front of a crowd on a stage with a lot of lights
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Iris Groen @irisgroen.bsky.social · 16/01/2026
I have a PhD opening for my #VIDI BrainShorts project 📽️🧠🤖! Are you or do you know an ambitious, recent (or almost) MSc graduate with a background in NeuroAI and interest in large-scale data collection and video perception? Check out our vacancy! (deadline Feb 15). werkenbij.uva.nl/en/vacancies...
werkenbij.uva.nl
Vacancy — PhD Position in NeuroAI for Video Perception in the Human Brain
<p><span>Are you interested in using AI to unravel the mysteries of the brain? Do you want to perform cutting-edge NeuroAI research and leverage deep learning to understand human vision? Then check out the vacancy below and apply for a PhD position in this exciting research direction.</span></p>
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 14/01/2026
What determines the perception of orientations in visual cortex, sharp contours or oriented spatial frequencies? It's the contours, the building blocks for shape. Brilliant paper by Seohee Han out in Scientific Reports: www.nature.com/articles/s41... @uoftpsychology.bsky.social
(a) Mean cross-validated R2 for each model, averaged across participants and shown separately for each visual area (V1–hV4) and across all ROIs combined. Error bars indicate ± 1 SEM. All pairwise differences were significant except between the Contour-Based and Line Drawing–Steerable Pyramid Models in hV4. (b) Mean R2 by population receptive field eccentricity. Eccentricities of voxels are binned up to 4.2 visual angle which was the extent of the image from the central fixation mark. (c) Left: Visual ROI on an inflated surface map in fsaverage space. Right: R2 difference surface map in fsaverage space. R2 from the Photo-Steerable Pyramid Model was subtracted from the Contour Model. Positive values indicate bigger R2 values from Contour compared to Photo-Steerable Pyramid Model.
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 09/01/2026
Wonderful article about our recent paper in @pnasnexus.org! Thanks, @sachapfeiffer.bsky.social and @mickbonner.bsky.social! @yikai-tang.bsky.social @uoftpsychology.bsky.social @artsci.utoronto.ca @utoronto.ca
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Michelle Greene @mgreenephd.bsky.social · 24/12/2025
🚨 Last publication alert of 2025! Why is scene understanding easier and faster for some scenes than for others? Here, we explore whether scenes with too much information slow visual processing. 1/
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 19/12/2025
Bridges can anchor communities as landmarks and even tourist destinations, blend into their environment unnoticed, or they can be eyesores. What determines the aesthetic quality of bridges? Mei Yang, @damianoc.bsky.social, Paul Gauvreau, and I explore this question here: doi.org/10.1371/jour...
doi.org
Empirical aesthetics of bridges
Bridges are works of public infrastructure designed to perform a practical function. They are unique among works of engineering in that they also have a significant aesthetic dimension. At their best,...
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Grace Lindsay @neurograce.bsky.social · 08/12/2025
Spread the word: I'm looking to hire a postdoc to explore the concept of attention (as studied in psych/neuro, not the transformer mechanism) in large Vision-Language Models. More details here: lindsay-lab.github.io/2025/12/08/p... #MLSky #neurojobs #compneuro
lindsay-lab.github.io
Lindsay Lab - Postdoc Position
Artificial neural networks applied to psychology, neuroscience, and climate change
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Mick Bonner @mickbonner.bsky.social · 11/12/2025
Dimensionality reduction may be the wrong approach to understanding neural representations. Our new paper shows that across human visual cortex, dimensionality is unbounded and scales with dataset size—we show this across nearly four orders of magnitude. journals.plos.org/ploscompbiol...
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 11/12/2025
Registration for TASC 2026 is now open! sites.google.com/view/tasc2026/ forms.gle/YFENqo6rSd5F... Keynote speakers: Kalina Christoff Hadjiilieva and Gerald Cupchik Register by January 16th!
sites.google.com
TASC 2026
Toronto-area meeting of researchers working on empirical aesthetics and creativity April 14th, 2026 Paul Cadario Conference Centre Croft Chapter House, University College 15 King's College Circle, T...
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University of Toronto Psychology @uoftpsychology.bsky.social · 04/12/2025
“People don’t just want to enjoy the superficial qualities of an artwork: the lines and the colours. They want to have a deeper connection with it," says @dirkbwalther.bsky.social. www.thestar.com/entertainmen...
thestar.com
As an arts critic, I give in to my subconscious. But what’s really happening in my mind?
Arts critic Joshua Chong tests the AGO's Art Rate Monitor and speaks with psychologist Dirk Bernhardt-Walther about how art impacts the brain.
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 03/12/2025
@thestar.com has an interesting article today about aesthetics and beauty, for which @joshuachong.bsky.social interviewed my about the psychology of aesthetics: www.thestar.com/entertainmen... (archive version: archive.ph/1yTOe) @uoftpsychology.bsky.social
thestar.com
As an arts critic, I give in to my subconscious. But what’s really happening in my mind?
Arts critic Joshua Chong tests the AGO's Art Rate Monitor and speaks with psychologist Dirk Bernhardt-Walther about how art impacts the brain.
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 02/12/2025
Energy efficiency drives evolution, and humans may have evolved pleasure-based signals to optimize actions. Does this extend to aesthetic pleasure? Yes! Strong evidence in silico and humans, out in PNAS Nexus: tinyurl.com/3kbu8xw4 With Yikai Tang and Wil Cunningham. @uoftpsychology.bsky.social
Conceptual Roadmap of the present study. To examine the relationship between the metabolic costs of visual processing and aesthetic pleasure, we used both computational and physiological measures to quantify metabolic costs during visual processing: 1. Model-derived estimates of metabolic costs based on the activation of a deep neural network; 2. Metabolic activity of human brains, specifically in the visual processing areas. We found that both measures were inversely related to aesthetic pleasure.
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 01/12/2025
What makes visual stimuli memorable? Wilma Bainbridge, @keisukefukuda.bsky.social, Lore Goetschalckx, and I investigate the role of processing fluency for memorability in a new review paper in Nature Reviews Psychology. Check it out! rdcu.be/eSyjz
rdcu.be
Memorability of visual stimuli and the role of processing efficiency
Nature Reviews Psychology - Certain items are better remembered than others across individuals, a property known as memorability. In this Review, Bainbridge and colleagues detail memorability...
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Martin Wiener @martinwiener.bsky.social · 01/12/2025
Memorability of visual stimuli and the role of processing efficiency Very cool review on image memorability (hint: priority coding is key) by Wilma Bainbridge, @dirkbwalther.bsky.social @keisukefukuda.bsky.social, Lore Goetschalckx rdcu.be/eSyjz
rdcu.be
Memorability of visual stimuli and the role of processing efficiency
Nature Reviews Psychology - Certain items are better remembered than others across individuals, a property known as memorability. In this Review, Bainbridge and colleagues detail memorability...
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Eline Van Geert @elinevg.bsky.social · 02/11/2025
Very pleased to share that our article on preferences for complexity at different levels of order is now out in PACA! 🎉Not all types of complexity were appreciated similarly, but all were liked better under high order! 🔗 doi.org/10.1037/aca0... 📄 osf.io/preprints/ps... @gestaltrevision.bsky.social
doi.org
APA PsycNet
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Erez Freud @erezfreud.bsky.social · 30/10/2025
Exciting update: The Canadian Society for Brain, Behaviour and Cognitive Science (CSBBCS) will host its 2026 Meeting at York University,(June 1–3, 2026), followed by the Cognition and Action Satellite Workshop (June 4–5). @jdcrawford.bsky.social @yorku-cian.bsky.social www.yorku.ca/research/cia...
Logo of the CSBBCS, CIAN and York U
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University of Toronto Psychology @uoftpsychology.bsky.social · 16/10/2025
Out of a record 662 applications from students at 178 different high schools in Ontario, 60 young learners were invited to participate in the free two-week program @utoronto.ca designed to advance equity, diversity, inclusivity & accessibility in psychology & post-secondary education.
psych.utoronto.ca
SPRINT hits new heights breaking down barriers in science
The Summer Psychology Research Initiative (SPRINT)—an outreach and access program established five years ago by graduate students in the Department of Psychology—celebrated its biggest year yet this s...
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 16/10/2025
Who's afraid of AI? toronto2025.ai
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John Anderson 🇨🇦 @janderz8.bsky.social · 18/09/2025
Hi #canadian researchers - please sign this petition to help ensure funding isn’t cut to tri council agencies (NSERC, SSHRC, and CIHR). We’re looking at potential 15% cuts to ALL federal spending including grants win.newmode.net/canadianasso...
win.newmode.net
New/Mode | Make your voice impossible to ignore
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 14/10/2025
How do our senses contribute to food enjoyment? We answer this question in a new review paper. The paper started as a final project in an undergraduate seminar on neuroaesthetics in 2023. I am so proud of the students and their hard work! cjur.ca/wp-content/u... @uoftpsychology.bsky.social
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Rob Sica @robsica.bsky.social · 07/10/2025
"style is more than just an optional add-on for visual objects: it is part of visual processing and has consequences for how we perceive and respond to what we see"
sciencedirect.com
How do we see style?
In a recent series of experiments, Boger and Firestone ask: How do we perceive style?’. Their findings suggest that style perception relies on basic p…
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University of Toronto Psychology @uoftpsychology.bsky.social · 01/10/2025
How well do traditional attention theories generalize to complex scene features? @songaeun.bsky.social, @drmack.bsky.social & @dirkbwalther.bsky.social used AI-generated stimuli to find out. 👀 www.psych.utoronto.ca/news/using-g...
psych.utoronto.ca
Using generative AI to uncover how we attend to complex scene features
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 01/10/2025
The Cognitive Science Research Community (CoRC) at the University of Toronto has several exciting events in store this year: www.uc.utoronto.ca/cognitive-sc... Join us for science and good company!
uc.utoronto.ca
Cognitive Science Research Community (CoRC) | University College U of T
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Dirk Bernhardt-Walther @dirkbwalther.bsky.social · 11/09/2025
Announcing the Toronto Aesthetics Sciences and Creativity Conference 2026! TASC 2026 brings together researchers, scholars, and students from across the Greater Toronto Area with interest in empirical aesthetics, psychology of art, and the study of creativity. sites.google.com/view/tasc2026/
sites.google.com
TASC 2026
Toronto-area meeting of researchers working on empirical aesthetics and creativity April 14th, 2026 Paul Cadario Conference Centre Croft Chapter House, University College 15 King's College Circle, T...
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Psychonomic Society @psychonomicsociety.bsky.social · 09/09/2025
A new study uses AI-generated stimuli to uncover attention to complex scene features. Read more in a post by @ankosov.bsky.social on a new #psynomAPP paper by @songaeun.bsky.social, @drmack.bsky.social, and @dirkbwalther.bsky.social buff.ly/2So7ndD
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