Jim Cavanagh

Where Does EEG Come From and What Does It Mean?

pubmed.ncbi.nlm.nih.gov/28314445/

ORDER NOW and get a super-neato commentary.

www.biologicalpsychiatrycnni.org/article/S245...

is it a pony?

You got a template?

Theta-frequency subthalamic nucleus stimulation increases decision threshold Executive functions are often impaired in patients with Parkinson’s disease (PD), and these deficits can be predicted by decreased frontal cortical 4-…

Excited to share our new paper: whether STN stimulation increases impulsivity depends on theta frequency. 🧠🤓 Grateful to have contributed alongside such a fantastic team! Rachel, Kumar,
@jimfcav.bsky.social @janw.bsky.social and more! Link 👇: www.sciencedirect.com/science/arti...

Neat thought about sign-tracking. But I don't see any evidence that RewP is involved in any RL or salience-related enhanced neural response to an imperative cue. It's feedback only (as far as we know). Response, volition, attention, meaning: all these enhance ERPs; RewP isn't any different.

In these cases we cite, the interspersed proxy cues are highly predictive of the desired outcome, so I think they end up being the same thing. (e.g. when you see ♦️, press 👈 to get a 😀. But before the 😀 you get a 🍇. This 🍇==😀 for the purposes of the RewP)

I remember when you did eeg!

1) We review its elicitation, quantification, generation & theoretical interpretation.
2) We challenge the assumption of a single bipolar signal (+RPE to -RPE) in the difference wave.
3) We propose a refined theoretical account: from reward receipt to a more nuanced signal of goal attainment.

Big news. After 48 drafts, Clay Holroyd and I are excited to present a narrative review and new theoretical summary on our favorite sensitive & specific EEG marker of reward receipt - the Reward Positivity: tinyurl.com/yzy98rur

Congratulations

Excited to share my first 1st & corresponding author preprint!

Here, I examine an EEG component, the Reward Positivity (RewP), during inference-based decision-making w/Holly Crowder, Peter Kakalec, Lam Duong, Craig McDonald, & Jim Thompson.

(1/15)

That student's name? Seth Abrutyn circa 1998.

Yeah I learned that from writing a paper with you. I think you have the shortest responses I've ever seen. Brevity is...

... good.

Yeah only one guy I know had the cojones to try something like that: www.jneurosci.org/content/32/2...

As more of a biologist than a modeler, I'm comfortable assuming that value is more complex than what RL accounts for. So ... not terribly surprised that a biological system acts like a complex affective/motivational register and not a highly restricted see-saw. (RewP as well, as you surely know)

Finally got time to read it. Great paper. Here's my review:

Major points: Why not just call it a P3a?

Minor points: Your ERPs are all upside down

A new Python toolbox called HSSM simplifies working with Hierarchical Sequential Sampling Models (HSSMs) to understand how we accumulate evidence and make choices. Built on PyMC, Bambi, & ArviZ. Check it out! #cognitivescience #python #decisionmaking

edspace.american.edu/openbehavior...

SPR is thrilled to announce the keynote speakers for #2025SPR in Montréal! Submit your abstract here: spr.joynmeeting.com/v2/

Reactive.

Go!

Blammo.

The Reward Positivity: sources, vmPFC-specific diminishment in MDD, and predictions for future research.

Paper and data now out:
tinyurl.com/trufuz2k
#Openneuro ds005356

Looking forward to reading it. Wish I had been an R3. That could gave gotten hilarious.

#psynomCABN Special Issue! This study unveils a rodent version of the #Reward #Positivity. By localizing cortical sources in mice, they show its relevance to reward processing & #learning. @JimCav bit.ly/44yHtRi

#psynomCABN Special Issue! Elevated parietal alpha power is an EEG #biomarker for measuring motivation-related behavior in cross-species progressive ratio breakpoint tasks #amphetamine. Michael Noback, James F. Cavanagh, @jaredwyoung.bsky.social bit.ly/3JZj1yS