O'Connell Lab

O'Connell Lab

@connelllab.bsky.social

Prof Redmond O'Connell's lab, Trinity College Institute of Neuroscience. Seeking to understand the neural mechanisms underpinning high-level cognition. https://oconnell-lab.com/home/opportunities/

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O'Connell Lab
@connelllab.bsky.social

2/3 Frömer et al (2024) used a signal deconvolution method to show that one signature of evidence accumulation (EA) observed in the centro-parietal positivity (CPP) - trial-averaged response-locked buildup effects - could arise artifactually from overlapping stimulus- and response-locked components.

O'Connell Lab
@connelllab.bsky.social

3/3 Here we show that their deconvolution approach eliminates these same signatures when applied to a ground-truth EA signal. We also recap the many other signatures of sensory EA that the CPP has been shown to exhibit.

O'Connell Lab
@connelllab.bsky.social

Check out our new paper in which we identify a model that can jointly account for the timing and accuracy of perceptual choices, the timing and level of subsequent confidence judgments and the pre- and post-choice dynamics of neural decision signals

John P Grogan@johnpgrogan1.bsky.social

Our newest preprint is out (doi.org/10.1101/2025.06.05.658071), with @lucvermeylen.bsky.social,Dasha Monakhovych, Cameron McCabe, Sarah-Louise Mannion, @kobedesender.bsky.social, @redmondoconnell.bsky.social, comparing post-decision confidence models against behaviour and neural decision signals...

doi.orgNeurally-informed modelling unravels a single evidence accumulation process for choices and subsequent confidence reportsSubjective confidence in perceptual choices depends on computations occurring prior to and after choice commitment. However, the nature of these computations remains unclear. Current models disagree o...

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RLDM
@rldmparis2027.bsky.social

📢 Call for Abstracts 📢 Submit your extended abstracts on "learning and decision-making over time to achieve a goal" to #RLDM2025. Successful applications will be selected for poster or oral presentation to an interdisciplinary audience. 🗓️ Deadline: Jan 15th 🔗 Learn more: rldm.org/call-for-abs...

O'Connell Lab
@connelllab.bsky.social

“Regressing common choice signals away does not make them artifacts" Please check out our commentary on the Frömer et al paper (2024, Nature Human Behaviour) in which we highlight important problems with the analysis and interpretation of their perceptual choice data. www.biorxiv.org/content/10.1...

biorxiv.orgRegressing Away Common Neural Choice Signals does not make them Artifacts. Comment on Frömer et al (2024, Nature Human Behaviour)The recent paper by Frömer et al (2024, Nature Human Behaviour) examines a component of the event-related potential (ERP) known as the centro-parietal positivity (CPP) that has been widely implicated ...
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O'Connell Lab
@connelllab.bsky.social

We found supporting evidence that temporal filters are involved in ODMR, with the higher frame rate display seeming to induce more ODMR than the lower frame rate display. Confidence data interestingly distinguished ODMR both from error and correct responses. 4/5

O'Connell Lab
@connelllab.bsky.social

Our results have interesting implications for modelling 2 choice and continuous outcome dot motion tasks, and open the door to future research to help further develop our understanding of ODMR 5/5

O'Connell Lab
@connelllab.bsky.social

Pat was frustrated at consistently responding in the opposite direction to the true dot motion direction displayed during piloting for a related study. Diving into the literature revealed he was not the only one responding in such a way. 2/5

O'Connell Lab
@connelllab.bsky.social

Inspired by Bae and Luck's 2022 Visual Cognition paper, we decided to investigate if changing the display frame rate would impact ODMR rates - hypothesising that temporal filtering may be involved. We also gathered confidence data to compare ODMR to correct and error responses. 3/5

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