Or, more accurately, a rat's brain on potato chips. Last week, PLoS One published a very interesting paper by Dr. Tobias Hoch and colleagues on what happens in a rat's brain when it is exposed to a highly palatable/rewarding food (1). Rats, like humans, overconsume highly palatable foods even when they're sated on less palatable foods (2), and feeding rats a variety of palatable human junk foods is one of the most effective ways to fatten them (3). Since the brain directs all behaviors, food consumption is an expression of brain activity patterns. So what is the brain activity pattern that leads to the overconsumption of a highly palatable and rewarding food?
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