🚨 Job Alert 🚨 Developmental Computational Psychiatry lab is hiring! We are looking for postdocs in CBT, neuroimaging, developmental psychology, and a lab manager. We offer: brand new MRI, great coffee, wonderful place w nature Interested? Email me! Details: devcompsy.org/join-the-lab/#neuroscience
Latest in our series on unconscious instrumental learning: stimulus awareness is necessary not only for instrumental learning, but also for instrumental responding to existing associations - w/ Ryan Scott & Gerhard Jocham www.sciencedirect.com/science/arti...#PsychSciSky#cogsci
Instrumental conditioning is a crucial part of adaptive behaviour, allowing agents to selectively interact with stimuli in their environment. Recent e…
I put up the preprint of this work > 2 years ago: www.biorxiv.org/content/10.1... he main story is still the same, but we added several methodological details and extra modelling results (see 52 pages of Supplementary Materials)! Happy to now have this chapter finally finished! 🔚
Importantly, EEG correlates of biased prediction errors in cortical regions (dACC, PCC) precede those of subcortical regions (striatum).
The main finding is that learning from rewards and punishments is biased (easier acquisition of own actions from rewards, impaired unlearning of inactions after punishments) and that biased prediction errors better describe BOLD signal in cortex (pgACC, dACC, PCC) and striatum.
Happy the 2nd empirical chapter has (finally!) been published in Nature Communications: nature.com/articles/s41... In this work, we used simultaneous EEG-fMRI recordings to investigate the temporal cascade of biased learning from rewards and punishments across cortex and subcortex.
Totally forgot to include the link to the preprint, here it is: www.biorxiv.org/content/10.1...
8/8 Maybe, all three signals (striatal BOLD, theta, pupil) reflect the “value of work”, i.e. value of recruiting additional effort to emit a Go response, encoded by dopamine. An idea that would bridge several of my PhD findings! Again, many open questions, more evidence needed.
7/8 We discuss this finding in the context of previous studying linking noradrenaline and effort expenditure as well as our own previous findings of striatal BOLD signal (and midfrontal theta power) which showed a similar pattern as our pupil data! academic.oup.com/cercor/artic...
6/8 Specifically, this effect was not present on the very first trials (when people did not know cue valence yet), but only emerged together with participants successfully inhibiting biases!