Anne Draelos wins best poster

Congratulations to Anne, who won best poster for her work on real-time analysis of zebrafish data at the Duke Research Computing Symposium!

DIBS incubator award

We won an Incubator Award from the Duke Institute for Brain Sciences for Anne’s work in collaboration with Eva Naumann on real-time analysis of zebrafish data. See more information on our research page.

New paper: testing legal decision-making at scale

Today, our paper on legal decision-making goes online at Nature Human Behaviour. You can read more about the genesis of the project here. Briefly, we used a large-scale survey approach based on randomly generated legal cases to show three things:


What can artificial agents teach us about social decisions?

Slides from John’s talk at Duke’s Basic Science Day are available here. This talk is based on Kelsey’s paper, available on bioRxiv.

Why my two-year-old is still better than Google

John recently gave a talk in Raleigh as part of the North Carolina Museum of Natural Science’s Science Cafe series. The talk was originally titled “Not quite SkyNet: Three things my two-year-old can do that Google still can’t.” Perhaps this was a little too tongue-in-cheek, since the talk was billed under a different title, but a video of the event is up on YouTube:


We're hiring

The laboratory of Dr. John Pearson ( is seeking a data scientist/research assistant to support its applied machine learning research program. This is a one-year full-time position with the possibility of renewal. Women and minorities particularly encouraged to apply.


Modeling other minds

For those who are interested in the slides from John’s Duke CCN talk, those are available online here.

New funding from Amazon

We just got word yesterday that P[λ]ab has received a grant through Amazon’s Cloud Credits for Research program to further our work on large-scale analysis of electrocorticography (ECoG) data.


Advantages of git and GitHub for scientists

If you missed my talk today about the benefits of git and GitHub for academic researchers, slides are available here:

Dynamic control models for strategic interaction

If you saw or heard about my talk at the Society for Neuroscience meeting in San Diego and are looking for the slides (including videos), they can be found at


Time allocation in neuroscience research

The Setup

A couple of weeks ago, as I was preparing to teach our incoming graduate students about data analysis, I ran across the following assertion in my notes: neuroscientists spend more time on data analysis than any other research activity.


Investing in Julia

At some point last summer, I decided Julia was going to win.


Pλab in the news

Our work on eyetracking in collaboration with Zab Johnson and Bass Connections was just featured on the Nasher Museum website and in Duke Today.

Distributing OpenCV and FFMPEG

For some of our previous work on eye tracking, we needed to be able to generate videos in way that could be linked into an automated analysis pipeline. For this, we use OpenCV, a tool for advanced frame-by-frame image analysis. Unfortunately, OpenCV’s ability to write movies in common output formats relies on OpenCV being linked to FFMPEG (a video codec library) and compiled manually, so you can’t just install the necessary software with a package manager. The build process can be tricky, with various unique issues arising on different systems. However, with the help of modern containerization services like Docker, we can bundle a working version of OpenCV into a container and deploy it across platforms. After that, all it takes is two lines at a command prompt to get a working version up and running on any system.


Eye Tracking and Art

As a lab, we’re interested in natural behaviors. This can mean a lot of things, but in particular, it means attempting to study human and animal behavior the way it occurs outside the lab. Many of the tools we build harness modern computing to enable us to do this with the precision and rigor of traditional lab experiments.


New commentary on human dopamine paper in PNAS

Happy New Year!


New paper on social decision-making in PNAS

This week, new work from the P[λ]ab investigating neural mechanisms underlying social decisions went live (open access) on PNAS. This work, led by the Chang and Platt labs, builds on a series of elegant experiments Steve Chang began when he and John were postdocs together in Platt Lab at Duke. In this most recent paper, we report that single neurons in the amygdala respond differently depending on who benefits from rewarding outcomes, and that administering the chemical oxytocin, which plays a role in birth and bonding, altered the decisions animals made when choosing between rewards to themselves alone or themselves and a partner (they got more generous).


ECT Research Featured in The Atlantic

The Atlantic recently did a cool feature on Dr. Sarah (Holly) Lisanby that highlights some of the work she has done over the course of her career regarding ECT (Electro-Convulsive Therapy). The article is really well done, and I would recommend checking it out. As with anything on the internet though, avoid the comments.


NIH's Big Data Push


Tools for Eye Tracking

In the P[λ]ab, one of our main research focuses is eye-tracking. We have a collaboration with faculty in the Psychiatry department looking at pupillometry and its relationship to fear. Currently we’re using screen based eye-tracking devices that provide gaze coordinates in terms of where on the screen you are looking. Recently, we obtained some brand new Tobii Eye-Tracking Glasses that can allow us to expand beyond screen-based experiments, and in the last couple weeks we seen some exciting developments that will allow us to do really cool research!


News: Dr. Pearson profiled by Duke Today

Duke Today recently profiled Dr. Pearson as part of its New Faculty series. Thanks Kelly Rae Chi for a wonderful article!