| cool the brain | 0.48 |
| occur | 0.42 |
| increase alertness | 0.37 |
| reduce oxygen intake | 0.34 |
| increase blood flow | 0.31 |
| keep the brain | 0.25 |
| evoke unique neural act… | 0.25 |
| contagious | 0.59 |
| rude | 0.27 |
| counterproductive | 0.20 |
| useful | 0.16 |
| reflex | 0.62 |
| way | 0.58 |
| means | 0.37 |
| sign | 0.34 |
| the body's way | 0.29 |
| thermoregulatory behavi… | 0.29 |
| brain cooling mechanism | 0.25 |
| two different behaviora… | 0.25 |
| a herd instinct | 0.25 |
| triggered by increase | 0.49 |
| associated with tiredne… | 0.47 |
| triggered | 0.47 |
| associated with sleepin… | 0.44 |
| associated with boredom | 0.39 |
| observed in people | 0.32 |
| induced by apomorphine | 0.29 |
| induced by physostigmine | 0.29 |
| associated with transit… | 0.25 |
| induced by dopamine rec… | 0.25 |
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