Happy to share our new preprint on how voluntary actions modulate temporal anticipation with @alexandrenobre.bsky.social as the lead author: osf.io/preprints/ps... 🧠📈 #cognition Some might remember him presenting this at @timingresforum.bsky.social in Lisbon. (1/7) - ThreadSky

andrecravo.bsky.social • 47 days ago

Happy to share our new preprint on how voluntary actions modulate temporal anticipation with @alexandrenobre.bsky.social as the lead author: https://osf.io/preprints/psyarxiv/9byj7_v1
🧠📈 #cognition Some might remember him presenting this at @timingresforum.bsky.social in Lisbon.
(1/7)

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caesarekya.bsky.social•47 days ago

📌

martinwiener.bsky.social•47 days ago

Interesting stuff and curious finding! Did you look at the within-subject variance of RTs between initiation and external conditions?

andrecravo.bsky.social•47 days ago

Thanks!

I am pretty sure @alexandrenobre.bsky.social looked at it, but I don't think we did formal testing on it. Do you have an idea of what's going on?

I was positive it was something about action improving learning, but, in general, sequential effects did not change much with/without action.

martinwiener.bsky.social•46 days ago

Cool thanks. Lots of ideas but variance is easiest to look at for a precision/accuracy tradeoff. The use of a variable start time may also have affected it.

alexandrenobre.bsky.social•46 days ago

That's right, we checked it visually, which showed larger variance in the action condition in variable-foreperiod experiments, but we did not run any tests. Because this difference between initiation conditions did not appear to interact with foreperiod duration, we chose not to focus on it.

andrecravo.bsky.social•47 days ago

It is well known that the probability of an event occurring at a given time can modulate behavior. Although the exact mechanisms behind this effect are still unclear, this is one of the most replicated effects in temporal expectations. https://www.sciencedirect.com/science/article/abs/pii/S095943880700089X (2/7)

andrecravo.bsky.social•47 days ago

However, it is also well known that action can modulate time perception (like nicely reviewed by @martinwiener.bsky.social ) https://www.sciencedirect.com/science/article/abs/pii/S1364661321002059 (3/7)

andrecravo.bsky.social•47 days ago

Here, we explore how voluntary actions shape temporal preparation. In 4 experiments, participants responded to visual stimuli that appeared after a delay, sometimes triggered by their actions and sometimes externally. (4/7)

andrecravo.bsky.social•47 days ago

We found that: (1) When people triggered an event themselves, their RTs were slower than when the same event was externally triggered; (2) This was especially true for shorter delays (FPs), but the difference disappeared for longer FPs. (5/7)

andrecravo.bsky.social•47 days ago

Interestingly, this effect only showed up when FPs varied within a block. When FPs stayed constant, the difference vanished! This suggests that voluntary actions interact with uncertainty in temporal preparation. (6/7)

andrecravo.bsky.social•47 days ago

Why does this happen? We are not sure yet, but it seems that action somehow modulates how we estimate the probability of occurrence of events. (7/7)

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