Pedro Lopes

@pedrolopes.org

Associate Professor at University of Chicago, Computer Science. Runs the Human-Computer Integration Lab (https://lab.plopes.org) & also a musician.

If an action results in error, each neuron requires an individualized teaching signal that guides change in its output. This is the credit assignment problem of learning. Are there neurons in the brain that can compute such a sophisticated teaching signal? Yes. www.biorxiv.org/content/10.6...

Climbing fibers encode the gradient of a loss function for the cerebellum

Neurons in the brain are often many synapses away from motoneurons, yet if a movement results in error, each distant neuron needs a teacher that considers its specific contribution to production of th...

biorxiv.org

Two-Millisecond Passthrough Headset for Perceptual Studies By Meta's Eric Penner, Josephine D'Angelo, Clinton Smith, Nathan Matsuda, Navaneethan Siva, Phillip Guan "we find that 2 and 14 ms latencies are preferred over 23 and 29 ms when attempting to catch a ball"

Bild

The inaugural ACM AI Leadership Summit is August 31-September 1 in Atlanta Georgia and attempts to tackle some big questions in AI: what is next? what are the impacts on governance, creativity, education, scientific discovery, workforce? Website: aisummit.acm.org

BildBild

I am writing a small reflection about serving as technical program chair for CHI. If you have questions that I can try to answer in that essay (I already got a bunch in instragram) send them my way (you can DM, you can email me annon, reply below—whatever and I'll try to incorporate it!).

Bild

New paper at #ICRA2026 with/led by Matt Walter's team at TTIC. HapCompass: wearable haptic device for teleoperation that gives directional cues via asymmetric vibration! By mapping the robot's tactile measurements—improves teleoperation performance + better imitation learning!1/3

I had way too much fun making an example for my class: this is an FPGA driving a screen directly over VGA, no drivers, no adapter, nothing else: just pure H sync and V sync fun ;) almost a game of pong!

We did it! Students final boards from hcipcb.plopes.org class are on their way to @JLCPCB . As soon as they arrive it's solder and debug time for them: good luck and enjoy your 1st electronics adventure with a cortex MCU! Super start TAs: Dylan, Yun Ho and Romain Nith

Bild

The Abomination of AI – part 7 – what can we do? It all seems too big, requiring national and international responses.  But we can make a difference using appropriately chosen small AI (including none). Plus, this good use of AI is good for business too. alandix.com/blog/2026/04...

The Abomination of AI – part 7 – what can we do?

It all seems too big, requiring national and international responses. But we can make a difference using appropriately chosen small AI (including none). Plus, this good use of AI is good for business...

alandix.com

Meanwhile the ACM Digital Library is creating AI “podcasts” of papers with no author approval that of course contain inaccuracies (including e.g. misgendering authors) I don’t care about copyright. Legal /= ethical & academic institutions are embarrassing themselves www.404media.co/asu-atomic-a...

University Professors Disturbed to Find Their Lectures Chopped Up and Turned Into AI Slop

ASU Atomic, a new tool in beta at Arizona State University, takes faculty lectures and chops them into extremely short clips, that AI then attempts to turn into learning materials.

404media.co