Crystal Meth & Your Brain: An Infographic

Methamphetamine use is on the rise (Drug Enforcement Administration 2015). And so are crystal-meth-related drug convictions (see “State Sentencing…”). So what do we know about crystal meth? In particular, what does crystal meth do to your body and brain? The South Shore Recovery Center has some answers. In fact, they’ve done us the favor of turning those answers into the infographic below.
Continue reading Crystal Meth & Your Brain: An Infographic

Addiction Vs. Habit: An Infographic

September was National Recovery Month. And in September, science writer Megan Ray Nichols reached out. Megan made an infographic about the research on and differences between addiction and habit. It’s really interesting and well-designed! Check out the infographic and the sources below.  Continue reading Addiction Vs. Habit: An Infographic

Where Does “Bottom-up” Bottom Out?

(Image credit: “Microglia and Neurons” by GerryShaw licensed under CC BY 3.0)

‘Bottom-up’ and ‘top-down’ are staple concepts in cognitive science. These terms refer to more than one set of concepts, depending on the context. In this post, I want to talk about one version of ‘bottom-up’ and try to pin down what is at the “bottom” of cognition.

First, I should single out the meaning of ‘bottom-up’ that I have in mind. It is the one in which ‘bottom’ refers to the deterministic hardware and pre-conscious processes from which “higher level” processes like meaning, affect, and perhaps conscious awareness emerge. Continue reading Where Does “Bottom-up” Bottom Out?