Colton Casto
coltoncasto.bsky.social
Colton Casto
@coltoncasto.bsky.social
PhD student at Harvard/MIT working with @evfedorenko.bsky.social @nancykanwisher.bsky.social | interested in neuroscience, language, AI | @kempnerinstitute.bsky.social @mitbcs.bsky.social | coltoncasto.github.io
Finally, all cerebellar language regions, but esp. LangCereb3, were similar to LANG in their response profiles and showed strong functional correlations during naturalistic cognition (Expt. 4, n=85).
11/n
April 21, 2025 at 3:19 PM
We also found that responses in LangCereb3 were modulated by many of the same linguistic properties as LANG (Expt. 3c, n=5). Interestingly, responses in LangCereb3 were not strongly modulated by surprisal.
10/n
April 21, 2025 at 3:19 PM
…than LANG. This suggests that LangCereb3 processes sentence-level meanings, plausibly inherited from LANG.
9/n
April 21, 2025 at 3:19 PM
The other three regions exhibited mixed-selective response profiles, responding strongly to language, but also to at least one of the non-linguistic conditions in our battery. These regions may integrate information across diverse neocortical systems.
7/n
April 21, 2025 at 3:19 PM
One cerebellar language region—LangCereb3, spanning Crus I/II/VIIb—responded selectively to language (mirroring the selectivity of LANG), suggesting that the computations it supports are specifically linguistic in nature.
6/n
April 21, 2025 at 3:19 PM
We then evaluated the selectivity of these regions for language relative to diverse non-linguistic conditions: motor/articulation tasks, demanding executive tasks, musical stimuli, social/communicative visual stimuli, and semantically meaningful visual stimuli (Expts. 2a-f, n=732).
5/n
April 21, 2025 at 3:19 PM
Using precision fMRI and a within-participant localization approach, we identified *4* regions of the cerebellum that respond reliably to language across modalities (written and spoken; Expts. 1a-b, n=754).
4/n
April 21, 2025 at 3:19 PM