Marcus Daghlian
@dagnsci.bsky.social
Postdoc at UCL with Child Vision Lab. Interest in visual neuroscience
Reposted by Marcus Daghlian
In sports, we celebrate 1st, 2nd, 3rd. Everyone else gets lumped together. Why?
Using 7T MRI, pRF modelling, and artificial neural networks, we show that tuning underlies ordinality perception, with most neural populations preferring early ordinalities.
doi.org/10.1523/JNEU...
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Using 7T MRI, pRF modelling, and artificial neural networks, we show that tuning underlies ordinality perception, with most neural populations preferring early ordinalities.
doi.org/10.1523/JNEU...
🧪🧠
Neural tuning for ordinal processing: convergent patterns in human brains and artificial networks
Processing ordinality, i.e., the rank of an item in a series such as 1st, 2nd, 3rd, etc., is a fundamental skill shared by humans and animals. While humans often use symbolic sequences like numbers or...
doi.org
February 12, 2026 at 2:33 PM
In sports, we celebrate 1st, 2nd, 3rd. Everyone else gets lumped together. Why?
Using 7T MRI, pRF modelling, and artificial neural networks, we show that tuning underlies ordinality perception, with most neural populations preferring early ordinalities.
doi.org/10.1523/JNEU...
🧪🧠
Using 7T MRI, pRF modelling, and artificial neural networks, we show that tuning underlies ordinality perception, with most neural populations preferring early ordinalities.
doi.org/10.1523/JNEU...
🧪🧠
Reposted by Marcus Daghlian
Geometric constraints in the development of primate extrastriate visual cortex https://www.biorxiv.org/content/10.64898/2026.02.04.703881v1
February 8, 2026 at 3:16 AM
Geometric constraints in the development of primate extrastriate visual cortex https://www.biorxiv.org/content/10.64898/2026.02.04.703881v1
Reposted by Marcus Daghlian
Excited to announce the first paper of my PhD, which explores an inverse relationship between brain and retina complexity. We think this may reflect a more general trade-off between central and peripheral processing of sensory information. Read more here: jov.arvojournals.org/article.aspx...
February 8, 2026 at 3:37 PM
Excited to announce the first paper of my PhD, which explores an inverse relationship between brain and retina complexity. We think this may reflect a more general trade-off between central and peripheral processing of sensory information. Read more here: jov.arvojournals.org/article.aspx...
Reposted by Marcus Daghlian
For any one who might be curious as to why monitor lizards might have more sophisticated cognitive abilities when compared to many other closely related lizards here are a few evolutionary hypothesis. I'd more than happy to share a copy of the paper with anyone interested. Enjoy!
lnkd.in/e94-Q5uw
lnkd.in/e94-Q5uw
Making Sense of Monitor Lizard Cognition: Ecological Drivers of Divergent Cognitive Evolution - Biological Theory
Biological Theory - Monitor lizards, some of the largest and most ecologically diverse lizards, have traditionally received little attention in comparative cognition research. Although emerging...
lnkd.in
February 4, 2026 at 8:26 PM
For any one who might be curious as to why monitor lizards might have more sophisticated cognitive abilities when compared to many other closely related lizards here are a few evolutionary hypothesis. I'd more than happy to share a copy of the paper with anyone interested. Enjoy!
lnkd.in/e94-Q5uw
lnkd.in/e94-Q5uw
Reposted by Marcus Daghlian
A Quantitative Benchmark of Visual Information in Human Brain Recordings Across fMRI, MEG, and EEG https://www.biorxiv.org/content/10.64898/2026.01.11.698841v1
January 13, 2026 at 1:15 AM
A Quantitative Benchmark of Visual Information in Human Brain Recordings Across fMRI, MEG, and EEG https://www.biorxiv.org/content/10.64898/2026.01.11.698841v1
Reposted by Marcus Daghlian
🚨 New preprint!
Why do some insights from spikes translate to field potentials while others don't? In this paper we compare visual memory representations in spikes and LFPs to propose a general framework that answers this question.
www.biorxiv.org/content/10.6...
🧵 (1/10)
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Why do some insights from spikes translate to field potentials while others don't? In this paper we compare visual memory representations in spikes and LFPs to propose a general framework that answers this question.
www.biorxiv.org/content/10.6...
🧵 (1/10)
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Neural representations of visual memory in inferotemporal cortex reveal a generalizable framework for translating between spikes and field potentials
Translating neurophysiological findings requires understanding the relationship between common measures of brain activity in animals (spiking activity) and humans (local field potentials, LFP). Prior ...
www.biorxiv.org
January 5, 2026 at 3:21 PM
🚨 New preprint!
Why do some insights from spikes translate to field potentials while others don't? In this paper we compare visual memory representations in spikes and LFPs to propose a general framework that answers this question.
www.biorxiv.org/content/10.6...
🧵 (1/10)
🧠🟦 🧠💻
Why do some insights from spikes translate to field potentials while others don't? In this paper we compare visual memory representations in spikes and LFPs to propose a general framework that answers this question.
www.biorxiv.org/content/10.6...
🧵 (1/10)
🧠🟦 🧠💻
Reposted by Marcus Daghlian
New Perspective from myself, Sarah Heilbronner and @myoo.bsky.social . “Rethinking the centrality of brain areas in understanding functional organization” in Nature Neuroscience. 🧵
rdcu.be/eVZ1A
rdcu.be/eVZ1A
Rethinking the centrality of brain areas in understanding functional organization
Nature Neuroscience - Parcellation of the cortex into functionally modular brain areas is foundational to neuroscience. Here, Hayden, Heilbronner and Yoo question the central status of brain areas...
rdcu.be
December 23, 2025 at 1:02 PM
New Perspective from myself, Sarah Heilbronner and @myoo.bsky.social . “Rethinking the centrality of brain areas in understanding functional organization” in Nature Neuroscience. 🧵
rdcu.be/eVZ1A
rdcu.be/eVZ1A
Reposted by Marcus Daghlian
Residual photoreceptors affect the response of a degenerate retina to electrical stimulation https://www.biorxiv.org/content/10.64898/2025.12.15.694454v1
December 18, 2025 at 6:16 AM
Residual photoreceptors affect the response of a degenerate retina to electrical stimulation https://www.biorxiv.org/content/10.64898/2025.12.15.694454v1
Reposted by Marcus Daghlian
Happy to share this new paper from the lab led by Angus Chapman, now out in PLoS Biology! It presents an integrated spatiotemporal normalization model for continuous vision. @afchapman.bsky.social
journals.plos.org/plosbiology/...
journals.plos.org/plosbiology/...
A dynamic spatiotemporal normalization model captures perceptual and neural effects of spatial and temporal context
The effects of spatial and temporal context on sensory systems have mostly been studied independently of each other. This study shows that the modulation of visual perception and neural activity by th...
journals.plos.org
December 18, 2025 at 6:30 PM
Happy to share this new paper from the lab led by Angus Chapman, now out in PLoS Biology! It presents an integrated spatiotemporal normalization model for continuous vision. @afchapman.bsky.social
journals.plos.org/plosbiology/...
journals.plos.org/plosbiology/...
Reposted by Marcus Daghlian
Auditory and visual object processing in olfactory cortex of individuals with life-long olfactory deprivation https://www.biorxiv.org/content/10.64898/2025.12.16.694602v1
December 19, 2025 at 12:15 AM
Auditory and visual object processing in olfactory cortex of individuals with life-long olfactory deprivation https://www.biorxiv.org/content/10.64898/2025.12.16.694602v1
Reposted by Marcus Daghlian
fMRI signals “up,” but neural metabolism might be going “down.”
In our @natneuro.nature.com paper, we demonstrate that about 40% of voxels with robust BOLD responses exhibit opposite oxygen metabolism, revealing two distinct hemodynamic modes.
rdcu.be/eUPO8
funds @erc.europa.eu
#neuroskyence 🧵:
In our @natneuro.nature.com paper, we demonstrate that about 40% of voxels with robust BOLD responses exhibit opposite oxygen metabolism, revealing two distinct hemodynamic modes.
rdcu.be/eUPO8
funds @erc.europa.eu
#neuroskyence 🧵:
December 16, 2025 at 3:43 PM
fMRI signals “up,” but neural metabolism might be going “down.”
In our @natneuro.nature.com paper, we demonstrate that about 40% of voxels with robust BOLD responses exhibit opposite oxygen metabolism, revealing two distinct hemodynamic modes.
rdcu.be/eUPO8
funds @erc.europa.eu
#neuroskyence 🧵:
In our @natneuro.nature.com paper, we demonstrate that about 40% of voxels with robust BOLD responses exhibit opposite oxygen metabolism, revealing two distinct hemodynamic modes.
rdcu.be/eUPO8
funds @erc.europa.eu
#neuroskyence 🧵:
Reposted by Marcus Daghlian
I'm more and more convinced that low-dimensional manifolds in the brain are just an artifact of the experimental designs and analyses we use...
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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...
December 11, 2025 at 8:19 PM
I'm more and more convinced that low-dimensional manifolds in the brain are just an artifact of the experimental designs and analyses we use...
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Reposted by Marcus Daghlian
Scalable and Adaptive Spatiotemporal Modeling for Task-Based fMRI Analysis https://www.biorxiv.org/content/10.64898/2025.12.04.692389v1
December 9, 2025 at 6:16 PM
Scalable and Adaptive Spatiotemporal Modeling for Task-Based fMRI Analysis https://www.biorxiv.org/content/10.64898/2025.12.04.692389v1
Reposted by Marcus Daghlian
Good piece by @kohitij.bsky.social on why neuroscientists use an "outdated" vision model. Neuroscience is different than AI and that's ok! medium.com/@kohitij_716...
Why AlexNet Died in AI but Lingers in Neuroscience — Through the Lens of Popper and Kuhn
When I talk to any of my machine learning researcher colleagues in 2025, they tell me that a model from 2023 is prehistoric. In AI, a year…
medium.com
December 3, 2025 at 2:53 PM
Good piece by @kohitij.bsky.social on why neuroscientists use an "outdated" vision model. Neuroscience is different than AI and that's ok! medium.com/@kohitij_716...
Reposted by Marcus Daghlian
Predicting functional topography of the human visual cortex from cortical anatomy at scale https://www.biorxiv.org/content/10.1101/2025.11.27.690210v1
November 30, 2025 at 8:15 AM
Predicting functional topography of the human visual cortex from cortical anatomy at scale https://www.biorxiv.org/content/10.1101/2025.11.27.690210v1
Reposted by Marcus Daghlian
New today in @Nature: your visual cortex contains touch-based body maps. bit.ly/VisualBodyMaps
Your brain transforms what you see into first-person, body-referenced codes: A previously unknown bridge between vision and touch.
Your brain transforms what you see into first-person, body-referenced codes: A previously unknown bridge between vision and touch.
November 26, 2025 at 4:01 PM
New today in @Nature: your visual cortex contains touch-based body maps. bit.ly/VisualBodyMaps
Your brain transforms what you see into first-person, body-referenced codes: A previously unknown bridge between vision and touch.
Your brain transforms what you see into first-person, body-referenced codes: A previously unknown bridge between vision and touch.
Reposted by Marcus Daghlian
In this preprint, we concurrently fit the HRF alongside pRF parameters doi.org/10.1101/2025...
- HRF varies between visual areas
- HRF also varies with pRF stimulus designs (due to nonlinearities?)
- Esp. when fitting complex models this can skew results a lot!
#visionscience #neuroskyence
- HRF varies between visual areas
- HRF also varies with pRF stimulus designs (due to nonlinearities?)
- Esp. when fitting complex models this can skew results a lot!
#visionscience #neuroskyence
November 18, 2025 at 11:35 PM
In this preprint, we concurrently fit the HRF alongside pRF parameters doi.org/10.1101/2025...
- HRF varies between visual areas
- HRF also varies with pRF stimulus designs (due to nonlinearities?)
- Esp. when fitting complex models this can skew results a lot!
#visionscience #neuroskyence
- HRF varies between visual areas
- HRF also varies with pRF stimulus designs (due to nonlinearities?)
- Esp. when fitting complex models this can skew results a lot!
#visionscience #neuroskyence
Reposted by Marcus Daghlian
Foraging as an ethological framework for neuroscience
From the amazing @lauragrima.bsky.social and colleagues - definitely looking forward to reading this!
#neuroskyence #psychscisky #cognition
From the amazing @lauragrima.bsky.social and colleagues - definitely looking forward to reading this!
#neuroskyence #psychscisky #cognition
Foraging as an ethological framework for neuroscience
The study of foraging is central to a renewed interest in naturalistic behavior in neuroscience. Applying a foraging framework grounded in behavioral …
www.sciencedirect.com
November 14, 2025 at 9:23 AM
Foraging as an ethological framework for neuroscience
From the amazing @lauragrima.bsky.social and colleagues - definitely looking forward to reading this!
#neuroskyence #psychscisky #cognition
From the amazing @lauragrima.bsky.social and colleagues - definitely looking forward to reading this!
#neuroskyence #psychscisky #cognition
Reposted by Marcus Daghlian
"...we advocate for a broader intellectual architecture, where methodological sophistication supports theoretical ambition."
I enjoyed and appreciated this article on theory development in motivation science. Such reflection is welcome.
#PsychSciSky #AcademicSky #EduSky doi.org/10.1037/mot0...
I enjoyed and appreciated this article on theory development in motivation science. Such reflection is welcome.
#PsychSciSky #AcademicSky #EduSky doi.org/10.1037/mot0...
November 14, 2025 at 12:45 PM
"...we advocate for a broader intellectual architecture, where methodological sophistication supports theoretical ambition."
I enjoyed and appreciated this article on theory development in motivation science. Such reflection is welcome.
#PsychSciSky #AcademicSky #EduSky doi.org/10.1037/mot0...
I enjoyed and appreciated this article on theory development in motivation science. Such reflection is welcome.
#PsychSciSky #AcademicSky #EduSky doi.org/10.1037/mot0...
Reposted by Marcus Daghlian
BayesCog: A freely available course in Bayesian statistics and hierarchical Bayesian modeling for psychological science: https://osf.io/ua5ng
November 16, 2025 at 1:39 PM
BayesCog: A freely available course in Bayesian statistics and hierarchical Bayesian modeling for psychological science: https://osf.io/ua5ng
Reposted by Marcus Daghlian
Synergy mediates Long-Range Correlations in the Visual Cortex Near Criticality https://www.biorxiv.org/content/10.1101/2025.11.07.687179v1
November 10, 2025 at 5:17 PM
Synergy mediates Long-Range Correlations in the Visual Cortex Near Criticality https://www.biorxiv.org/content/10.1101/2025.11.07.687179v1
Reposted by Marcus Daghlian
Functional architecture for speed tuning in primary visual cortex of carnivores https://www.biorxiv.org/content/10.1101/2025.11.04.686504v1
November 5, 2025 at 6:15 PM
Functional architecture for speed tuning in primary visual cortex of carnivores https://www.biorxiv.org/content/10.1101/2025.11.04.686504v1
Reposted by Marcus Daghlian
Beyond retinotopy: exploiting native visual representations in cortical neuroprostheses for vision loss remediation https://www.biorxiv.org/content/10.1101/2025.11.03.684808v1
November 4, 2025 at 8:16 PM
Beyond retinotopy: exploiting native visual representations in cortical neuroprostheses for vision loss remediation https://www.biorxiv.org/content/10.1101/2025.11.03.684808v1
Reposted by Marcus Daghlian
A semantotopic map in human hippocampus https://www.biorxiv.org/content/10.1101/2025.10.31.685959v1
November 2, 2025 at 8:15 AM
A semantotopic map in human hippocampus https://www.biorxiv.org/content/10.1101/2025.10.31.685959v1
Reposted by Marcus Daghlian
Task-optimized models of sensory uncertainty reproduce human confidence judgments https://www.biorxiv.org/content/10.1101/2025.10.31.685933v1
November 2, 2025 at 8:15 AM
Task-optimized models of sensory uncertainty reproduce human confidence judgments https://www.biorxiv.org/content/10.1101/2025.10.31.685933v1