11.   The brain circuits controlling sleep are highly similar in all mammals.

12.   The brain circuits through which placebos act, he said, are activated through the experience of living in a particular culture.

13.   The intensity of the moment helps to burn emotional memories into brain circuits.

14.   The more often a behavioral sequence is repeated, the stronger the underlying brain circuits become.

15.   They are also trying to link molecular memory processes to larger scale changes in brain cells and brain cell circuits.

16.   This means that brain circuits carved by early experiences may be changed through psychotherapy or other means.

17.   Whatever this research will ultimately show, happiness is clearly more than the sum of brain circuits.

18.   When people quit smoking, another cascade of reactions occurs, but this time among brain circuits normally associated with punishment.

19.   Scientists are pinpointing the neurochemicals that spark abnormal electrical signals and formation of some abnormal brain circuits and finding a slew of novel drug targets.