Visualizing the brain - brain waves

[@hannahvarkey6579]

I'm so grateful for these videos, Professor Rhodes! Working with eegs right now, and I wanted a refresher! :) The temporal and spatial resolution differences are important things that have stuck with me from class.

[@timoneill280]

I enjoyed hearing the part of the lecture I'd previously missed in the live version! This does make me never want to share the few "recorded Zoom meeting" style lectures I've uploaded.

[@RYANRHODES-cogsci]

Share! People will be interested in your expertise

[@kiratpreetdhillon]

Another great video. thanks! How was accuracy measured in the experiment? If we tell someone about a pattern and then ask them about it, of course they know that pattern, right?

[@RYANRHODES-cogsci]

Accuracy was measured using signal detection theory. We presented a series of grammatical "words" with intermittent ungrammatical words, which participants had to detect and push a button. People who are told the rule explicitly do pretty well at this, but I don't think it's trivial - you still have to track the relevant sounds and do a detection/matching process. When we don't tell people the rule explicitly, they often still perform well above chance, but when we ask them what logic they used or what they were responding to, they often have no clear idea (or they say something which definitely ISN'T the rule, like something about vowels!)

[@tanakitkaewprasit3656]

One thing ive been wondering, how do we detect specific neurotransmitters in cognitive experiments?

[@RYANRHODES-cogsci]

Neurotransmitters (biochem in general) are outside my area of expertise, so I'm not sure! I don't know of any non-invasive neuroimaging technique that can detect neurotransmitters