Andrew Reid PhD

This is a teaching-oriented post about the fundamental concepts underlying electroencephalography (EEG), and to some extent magnetoencephalography (MEG). I explore how electromagnetic fields are generated from neuronal current dipoles, and how the orientation and spatial coherence of these dipoles is critical for detecting brain activity with scalp electrodes or magnetometers. I also introduce the concept of volume conduction, and consider how the distribution of electric currents across multiple tissue types might be simulated — and how cortical morphology complicates efforts to localize M/EEG sources in the human brain.

In neuroscience, the conversation around the term "functional connectivity" can be confusing, largely due to the implicit notion that associations can map directly onto physical connections. In our recent Nature Neuroscience perspective piece, we propose the redefinition of this term as a causal inference, in order to refocus the conversation around how we investigate brain connectivity, and interpret the results of such investigations.

Announcing four new submissions to the ANIMA database, which brings us to 30 studies and counting. Check them out if you get the time!

Announcing a new submission to the ANIMA database: Hu et al., Neuroscience & Biobehavioral Reviews, 2015.

Musings on who I am, where I came from, and where I'm going as a Neuroscientist.