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Andres Canales-Johnson

@canalesjohnson.bsky.social
455 followers 106 following 64 posts

Brain scientist at Cambridge & Helsinki | Assistant Professor U Catolica del Maule | Creator of 'Talking Brains' 🧠🎙️ www.ccc-lab.org/canalesjohnson.html

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Reposted by Andres Canales-Johnson
Borjan (Boki) Milinković @neuromorphicboki.bsky.social · 18/09/2026
📜 FINALLY OUT! 📜 In @imagingneurosci.bsky.social (@mitpress.bsky.social), myself, Lionel Barnett, @anilseth.bsky.social, Olivia carter, and @thomasandrillon.bsky.social, advance approaches of #multiscale #emergence and it's application to EEG across #conscious #states. Buckle up 👇 1/n
direct.mit.edu
Emergent multiscale organisation of neural dynamics fragments in anaesthesia
Abstract. Conscious experience depends on the coordinated activity of neural processes that span multiple scales: from synapses to whole-brain dynamics. A recently introduced measure, dynamical indepe...
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Renzo Lanfranco @renzolanfranco.bsky.social · 14/09/2026
How much information about a stimulus is available to a perceptual system, and how much of that information becomes consciously accessible? In this new Perspective, “Perceptual awareness as an information-distribution problem,” I propose an information-theoretic framework. 🧵Preprint: osf.io/zmf5h
osf.io
OSF
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Evan Lewis-Healey @evanlhealey.bsky.social · 25/08/2026
Ever wondered what happens in the brain when meditation becomes effortless? 🧠 In the first paper from my postdoc, we investigated the neurophenomenology of brain criticality — a state poised between order and disorder, thought to support flexible and efficient information processing 🧵 1/7
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
The link: www.biorxiv.org/content/10.6...
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
Together, these findings suggest that attention regulates predictive learning not simply by changing the strength of PE responses, but by reshaping how distributed thalamocortical circuits represent and integrate sensory evidence over time.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
4. A brain-constrained neural network reproduces these dynamics through attention-dependent changes in inhibition, connectivity, and Hebbian plasticity, providing a potential mechanistic account linking attentional state to distributed predictive learning.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
3. In the temporal cortex, attention changes not only how much information is represented, but also how it is represented, by altering the balance between synergistic and redundant PE representations.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
2. Instead, the temporal cortex expresses two distinct learning regimes with opposing PE information trajectories that converge once attention is withdrawn.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
1. The thalamus exhibits a stable state-dependent reduction in prediction-error information during distraction.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
Using intracranial recordings from the human thalamus and temporal cortex, together with information-theoretic analyses and biologically constrained computational modelling, we showed that attention reshapes the informational architecture of PE representations:
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
We argue that, rather than simply changing the magnitude of PE responses, attention may fundamentally reorganize the representation of PE information across distributed neural circuits.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
Prediction errors (PE) are signals that the brain uses to update its internal models of the environment. Although attention is thought to regulate this process, research has yielded inconsistent findings reporting enhanced, reduced, or unchanged PE in response to attention.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 16/07/2026
Happy to share our new pre-print "Attention reshapes the information dynamics of thalamic and cortical prediction-error learning" led by the great Juho Äijälä, Thread below👇
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Reposted by Andres Canales-Johnson
Renzo Lanfranco @renzolanfranco.bsky.social · 07/07/2026
1/11 New preprint! Can we register eye contact before we consciously see gaze direction? We flashed faces for just 1–5 ms and found that direct gaze facilitates face detection before explicit gaze awareness. 🧵 doi.org/10.64898/202... Work with: @axc.bsky.social & @arvidguterstam.bsky.social
doi.org
Conscious and unconscious eye contact at the limits of vision
Eye contact is one of the most potent social signals, but it remains unclear how little visual input is sufficient to register direct gaze, and whether such registration requires conscious awareness. ...
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Andres Canales-Johnson @canalesjohnson.bsky.social · 24/06/2026
Link to article: www.nature.com/articles/s41...
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Andres Canales-Johnson @canalesjohnson.bsky.social · 24/06/2026
7. These results suggest a potential dual role of broadband and narrowband gamma cortical dynamics in visual processing, with broadband dynamics supporting nonlinear pattern recognition and oscillations facilitating information maintenance across the cortex.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 24/06/2026
6. In both species, the information conveyed by broadband signals was highly synergistic within and between visual areas. By contrast, the information carried by narroband gamma was primarily redundant within and between the same visual areas.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 24/06/2026
5. The information conveyed by broadband signals emerged early after stimulus onset, while narrowband gamma oscillations sustained information at later time points.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 24/06/2026
4. We analyzed ECoG and LFP in the visual cortex of human and non-human primates (macaque) to investigate the extent to which broadband signals and narrowband gamma oscillations conveyed synergistic or redundant information about images.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 24/06/2026
3. We used information-theoretical measures to dissociate neural signals sharing common information (i.e., redundancy) from signals encoding complementary information (i.e., synergy).
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Andres Canales-Johnson @canalesjohnson.bsky.social · 24/06/2026
2. The cortex generates diverse neural dynamics, ranging from broadband fluctuations to narrowband oscillations at specific frequencies. Here, we investigated whether broadband and oscillatory dynamics play different roles in the encoding and transmission of visual information.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 24/06/2026
Thrilled to share our @natcomms.nature.com article: "Broadband synergy versus oscillatory redundancy in the visual cortex", a cross-species research effort led by Louis Roberts. Thread below!
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Sara Coppi @saracoppi.bsky.social · 22/06/2026
🧵1/10 New paper out! In collaboration with @brainself.bsky.social and Karin Jensen! We systematically reviewed and meta-analyzed studies testing whether the Rubber Hand Illusion (RHI), the classic body ownership illusion, reduces pain in healthy participants. Short answer: the evidence says no.
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Shervin Safavi @neuroprinciplist.bsky.social · 09/06/2026
1/11 Happy to share our TICS paper on using the flexibility of one of the most basic cognitive functions, perception, to understand one of the most complex cognitive dysfunctions, psychiatric conditions (also my first formal work in computational psychiatry 🎉) 📄: www.cell.com/trends/cogni... 🧵 : 👇
cell.com
Perceptual multistability: a multifaceted window into brain dysfunctions
Perceptual multistability, observed across species and sensory modalities, offers valuable insights into numerous cognitive functions and dysfunctions. For instance, differences in temporal dynamics a...
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Andres Canales-Johnson @canalesjohnson.bsky.social · 05/06/2026
Link to article: direct.mit.edu/jocn/article...
direct.mit.edu
Distilling the Neurophenomenological Signatures of Pure Awareness during Transcendental Meditation
Abstract. Pure awareness (PA) has been proposed as a form of minimal phenomenal experience, but its neurophenomenological signatures remain poorly characterized. Transcendental meditation (TM) offers ...
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Andres Canales-Johnson @canalesjohnson.bsky.social · 05/06/2026
7. For cognitive and consciousness neuroscience, and meditation research, the takeaway is that pure awareness can be studied empirically as a temporally dynamic experience with measurable, distributed neural signatures.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 05/06/2026
6. This suggests that pure awareness is not a simple global increase or decrease in one EEG marker. It appears as a distributed multivariate neural pattern that depends on whether we compare meditation to ordinary cognition or to baseline rest.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 05/06/2026
5. But when TM was compared against its own resting baseline, the picture changed. Low-frequency functional connectivity became the strongest discriminator, revealing a double dissociation between “TM vs cognition” and “TM vs rest.”
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Andres Canales-Johnson @canalesjohnson.bsky.social · 05/06/2026
4. The key result is that TM vs counting was best discriminated by temporal entropy and aperiodic dynamics. In other words, the neural signature of pure awareness was not reducible to classic “brainwave coherence.”
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Andres Canales-Johnson @canalesjohnson.bsky.social · 05/06/2026
3. We then asked: Which neural signatures best distinguish TM from ordinary cognitive engagement? We screened theoretically inspired EEG neural markers: entropy, complexity, aperiodic activity, linear phase coherence, and nonlinear information sharing.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 05/06/2026
2. TM practitioners reported stronger, more dynamic pure awareness than matched controls who were doing mental counting. Crucially, this was not just a single rating: participants reconstructed how the experience unfolded over the full 30-min session.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 05/06/2026
1. What does “pure awareness” look like neurophenomenologically? In our new study in the Journal of Cognitive Neuroscience, we combined EEG and experience tracing to study Transcendental Meditation as an empirical model of minimal phenomenal experience: awareness with minimal content.👇🏽
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Renzo Lanfranco @renzolanfranco.bsky.social · 01/04/2026
What makes a body feel like our own? The sense of body ownership is a core aspect of self-awareness, and it depends on the integration of multiple sensory signals. What role do visual predictions play in body ownership? Check out our new paper in Royal Society Open Science: doi.org/10.1098/rsos...
doi.org
Disentangling visually driven tactile predictions from multisensory integration in body ownership
Abstract. The sense of owning one’s body is essential for distinguishing internal from external sensations. Research using bodily illusions shows that this
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Reposted by Andres Canales-Johnson
Borjan (Boki) Milinković @neuromorphicboki.bsky.social · 21/02/2026
An absolutely precision-oriented read from the wider team of @canalesjohnson.bsky.social and co. on the information processing of prediction errors--an already high feat. They go further, relating it to environmental stimuli across sleep stages.
jneurosci.org
Delayed, Reduced and Redundant: Information Processing of Prediction Errors during Human Sleep
During sleep, the human brain transitions to a ‘sentinel processing mode’, enabling the continued processing of environmental stimuli despite the absence of consciousness. We employed advanced informa...
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Reposted by Andres Canales-Johnson
Cognitive Science Group @cogscigroup.bsky.social · 09/02/2026
@ademertzi.bsky.social @katrinpreller.bsky.social @canalesjohnson.bsky.social
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Dr. Katja Thieme (she/they) @katjathieme.bsky.social · 31/01/2026
Academics vying for a spot in Epstein‘s world. There are so many. I feel the need to make a thread, so I don’t keep confusing them. 1/
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Andres Canales-Johnson @canalesjohnson.bsky.social · 20/12/2025
I'm enjoying this piece so much!
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Reposted by Andres Canales-Johnson
Renzo Lanfranco @renzolanfranco.bsky.social · 04/12/2025
Happy to share our new and groundbreaking study on the relationship between conscious awareness and the sense of bodily self! With @brainself.bsky.social at @ki.se and out today in PNAS: www.pnas.org/doi/10.1073/...
pnas.org
Conscious awareness, sensory integration, and evidence accumulation in bodily self-perception | PNAS
Conscious awareness refers to the subjective experience of perceiving, thinking, and feeling and the ability to report these experiences. These per...
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Renzo Lanfranco @renzolanfranco.bsky.social · 04/12/2025
Also, check out my popular science article about this paper in @theconversation.com - theconversation.com/why-our-phys...
theconversation.com
Why our physical bodies may be a core part of conscious experience – new research
The brain’s sense of “this is my body” is tightly bound to conscious awareness – far more than many theories assume.
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Reposted by Andres Canales-Johnson
Johnny Parr @johnnyparr.bsky.social · 02/12/2025
So happy our latest study is finally published! We show that falls are a major issue across the lifespan for individuals with DCD (i.e., Dyspraxia). Developmental Coordination Disorder: A Hidden Epidemic of Falls journals.humankinetics.com/view/journal... Key findings 👇
journals.humankinetics.com
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Olaf Hauk @olafhauk.bsky.social · 24/11/2025
We finish #CBUMethodsDay with EEG, MEG and Physiology, including @canalesjohnson.bsky.social's talk "Time-frequency Co-Information (TFCoI): Unraveling synergistic and redundant cross-frequency interactions using ECoG data". @mrccbu.bsky.social
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Andres Canales-Johnson @canalesjohnson.bsky.social · 19/11/2025
Delighted to share our new Perspective article @natrevneuro.nature.com, led by the great @edoardochidichimo.bsky.social : "Towards an informational account of interpersonal coordination". With @loopyluppi.bsky.social, Pedro Mediano, @introspection.bsky.social, Victoria Leong and Richard Bethlehem.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 19/11/2025
Delighted to share our new Perspective article @natrevneuro.nature.com, led by the great @edoardochidichimo.bsky.social : "Towards an informational account of interpersonal coordination". With @loopyluppi.bsky.social, Pedro Mediano, @introspection.bsky.social, Victoria Leong and Richard Bethlehem.
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Reposted by Andres Canales-Johnson
Renzo Lanfranco @renzolanfranco.bsky.social · 18/11/2025
I'm happy to share our preprint "Disentangling visually-driven tactile predictions from multisensory integration in body ownership". We show that tactile predictions in the rubber hand illusion are as important as feeling touch on the hand to elicit the feeling of ownership. osf.io/preprints/ps...
osf.io
OSF
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Andres Canales-Johnson @canalesjohnson.bsky.social · 30/09/2025
Neurofriends that might be interested: @haslagter.bsky.social @antoinelutz.bsky.social @evanlhealey.bsky.social @matthewsacchet.bsky.social @christimmermann.bsky.social @anilseth.bsky.social @ademertzi.bsky.social
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Andres Canales-Johnson @canalesjohnson.bsky.social · 30/09/2025
Together, these results suggest that pure awareness is a distinct neurophenomenological state and demonstrate the unique value of combining large and rigorously matched cohorts with time-resolved phenomenology and systematic neural screening.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 30/09/2025
Finally, TM showed little evidence of carry-over effects from meditation into subsequent rest, in contrast to controls, where counting induced residual changes
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Andres Canales-Johnson @canalesjohnson.bsky.social · 30/09/2025
In contrast, when TM was compared with its own baseline, low-frequency functional connectivity dominated, while temporal entropy contributed minimally to classification.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 30/09/2025
In relation to ordinary cognition in control subjects performing mental counting, pure awareness is best characterized by increased temporal entropy and scale-free neural dynamics.
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Andres Canales-Johnson @canalesjohnson.bsky.social · 30/09/2025
Using EEG and multivariate classification analyses, our large-scale screening of theoretically motivated EEG markers revealed a double dissociation in neural signatures.
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