Mariam Aly

@mariamaly.bsky.social

I study brains and sometimes use one. https://www.alylab.org/

Now final in @elife.bsky.social: #Synesthetes really do 'see' when reporting colors while reading (typeface gray) numbers: pupils change according to the perceived colors' brightness - if a synesthete sees a bright yellow, the pupils become smaller. elifesciences.org/articles/110...

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Christoph Strauch@cstrauch.bsky.social · 5mo ago

We show that synesthesia is sensory and automatic in nature: the pupil scales with the brightness of experienced synesthetic colors. doi.org/10.7554/eLif... Now in its new dress @elife.bsky.social (convincing & valuable in round 1). If anyone wants to pick up the method, happy to share & explain!

Check out our newest preprint, led by @sheensu.bsky.social and with @jasonleng.bsky.social, on when and why people choose to put off choosing! ⚖️🗓️ osf.io/preprints/ps... Sheen summarizes the excellent work in the 🧵 below:

@sheensu.bsky.social · 2d ago

New Preprint Alert! With @jasonleng.bsky.social @ashenhav.bsky.social @shenhavlab.bsky.social “Characterizing the causes, dynamics, and consequences of choice deferral” osf.io/preprints/ps... 🧵🧵🧵

"..CA3 operates as a nonlinearly gated scene constructor and CA1 as a continuous landmark integrator to build and maintain the cognitive map." How visual scenes recruit spatial maps: threshold-gated activation in CA3 versus continuous integration in CA1 Inah Lee Lab: www.biorxiv.org/content/10.6...

How visual scenes recruit spatial maps: threshold-gated activation in CA3 versus continuous integration in CA1

The hippocampal cognitive map is constructed from environmental sensory inputs, but the conditions that recruit a spatial map from a quiescent baseline remain unclear. Using a parametric virtual reali...

biorxiv.org

Want to teach your undergrad Honors students or early grad students about peer review, but not sure how? 🤔 We'll do it for free! We're offering free peer review workshops for departments, ideal for advanced undergrad/early grad seminars in Psych, Neuro, and related fields. See below for details!

Reviewer Zero@reviewerzero.bsky.social · 3mo ago

Are your students entering research culture without ever learning how peer review actually works? We'd love to help. We're offering free "Peer Review 101" virtual workshops for undergrad/grad seminars, tailored to Psych, Neuro, and related fields. Visit our website to learn more tinyurl.com/2ra56w72

SUPER excited to share the first-ever preprint out of my PhD! AND it comes with a CAT story. I know there are quite some people here who love seeing cat pictures!! 🐈1/🧵

NEW: The Trump admin finalized a regulation which makes the largest changes to the student visa process in 50 years, along with changes to rules for exchange visitors and international journalists. 🧵on some of the most consequential changes set to go into effect in September.

AILA@aila.org · 3w ago

DHS has published its Final Rule to eliminate "duration of status" for F, J & I nonimmigrants. One of the most significant changes to international student, exchange visitor & foreign media programs in decades, it will be costly, cause chaos, and cut legal immigration.

New perspective paper from our lab: “The hippocampus as a generative model” out now !! royalsocietypublishing.org/rstb/article... The traditional view of the hippocampus is that it creates a cognitive map. Here we extend this view to conceptualise the hippocampus as a “generative model”.

The hippocampus as a generative model

Abstract. A generative model can be defined as a model of the latent causes of sensory input that can be used to generate new data samples. By examining em

royalsocietypublishing.org

Very excited to share our new review on C-HORSE, our model of the hippocampus! We think there is very encouraging alignment between C-HORSE proposals and the extant empirical literature, though we also note plenty of areas for further model development. royalsocietypublishing.org/rstb/article...

Evidence for complementary learning systems within the hippocampus

Abstract. Decades of research have established the hippocampus as central to episodic memory, but growing evidence suggests that it also contributes to str

royalsocietypublishing.org

It was a delight to co-edit this issue with @peterkok.bsky.social & @barense.bsky.social, who are every bit as amazing to work with as you might expect 😊 I'm grateful to the authors, whose papers make this such an exciting collection, and to @catalinayang.bsky.social for the gorgeous cover!

Peter Kok@peterkok.bsky.social · 4w ago

The hippocampus sits at the interface of perception & memory, allowing us to link past, present, & future through its role in generating predictions. Excited to share this theme issue in @royalsociety.org's Philosophical Transactions B, co-edited with @barense.bsky.social & @mariamaly.bsky.social

Now in press at Cortex! "False discovery rate correction promotes confounded neuroimaging designs" Paper 🔓: www.sciencedirect.com/science/arti...

Effect of confound mass on true positive rates under test-wise FDR correction in completely arbitrary data. Confound mass represents how large a confound is in terms of the product of the number of tests it is present in, and its mean effect size across these tests. Results are shown at differing combinations of true effect size, number of tests with true (i.e., non-confound) effects, and sample size. Inflated surface maps of meta-analytic z-statistics from Neurosynth for low-level confounds (top) and high-level cognitive tasks (bottom). Red reflects positive activations, blue reflects negative (de)activations, and darker colors indicate larger z-statistics. Maps are thresholded at |z| = 1 for visualization purposes.The difference in integrated true positive rate between parcel-wise FDR and parcel-wise FWER (y-axis) is plotted as a function of confound effect size. Each point represents 1 out of 5000 studies simulated for each combination of task and confound. Smoothed loess lines are used to better show the overall trends.Effect of FDR-based publication bias on observed confound effects sizes. Simulated meta-analytic confound effect sizes are visualized through violin plots for each combination of task effect and confound effect examined in the neural data simulations. Meta-analyses featuring publication bias (orange) substantially inflate these effect size estimates in all cases, relative to meta-analyses featuring no publication bias (blue). Moreover, this bias was present – and in most cases larger – in the subset of studies that were included in the meta-analysis specifically when the publication bias was based on FDR instead of FWER integrated true positive rates (green).
Mark Thornton@markthornton.bsky.social · 11mo ago

After 5 years, I finally carved out time to turn this blog post on FDR (markallenthornton.com/blog/fdr-pro...) into a manuscript. The preprint features a much broader range of simulations showing how FDR promotes confounds, and how this effect compounds with publication bias: osf.io/preprints/ps...

Effect of confound mass on true positive rates under FDR correction. Confound mass represents how large a confound is in terms of the product of its voxel extent and effect size. Results are shown at differing combinations of true effect size, true effect voxel extent, and sample size.