Neuroscience
Paper Review: An Integration of Deep Learning and Neuroscience, Part 3

Paper Review: An Integration of Deep Learning and Neuroscience, Part 3

In our previous post we talked about how the brain might optimize cost functions. Now we’ll explore how cost functions may be generated, represented, and change over time in the brain. Marblestone et al outline several ways that cost functions could be generated.  In particular, they talk about specialized circuitry for comparing the predicted output...
Paper Review: An Integration of Deep Learning and Neuroscience, Part 2

Paper Review: An Integration of Deep Learning and Neuroscience, Part 2

One of the key sticking points in discussions comparing machine learning and the brain is how the notion of “learning” differs between computational and biological systems. In section 2 of their paper, Marblestone et al. grapple with this issue in detail. For our introduction post on this paper, go here. Deep neural networks are trained...
Paper Review: An Integration of Deep Learning and Neuroscience, Part 1

Paper Review: An Integration of Deep Learning and Neuroscience, Part 1

Nicole: More and more I see that people are very concerned with the biological plausibility of neural networks. I think this comes from the fact that we as machine learners are finally achieving human-level performance on some tasks. It has renewed faith in the idea that the best way to “solve” intelligence is to copy...
Neurons 101

Neurons 101

Neurons are the building blocks of the brain. They take information they receive from upstream neurons and summarize it as a spike that is sent  to downstream neurons. (image courtesy of wikimedia commons) Let’s talk about the anatomy of neurons:   Nucleus: Like any cell in your body, each neuron has a nucleus, where its...
Neuroscience news: what's fake and what's real?

Neuroscience news: what’s fake and what’s real?

Reporters have gotten very, very good at writing catchy headlines.  With all of the clickbait floating around the internet, the news has become an arms race, and science news is no exception.  Since people like hearing about how their brains work, and everyone secretly (not so secretly?) likes reading about sex, drugs and rock and...
Paper review: The brain adapts to dishonesty

Paper review: The brain adapts to dishonesty

Does dishonesty escalate over time? Garrett et al seek to answer this question and substantiate something we all have observed anecdotally: that dishonesty can be a “slippery slope.” The idea is that if you are dishonest once, it is easier to be dishonest again, and this effect can accumulate over time. This paper generated some...