Cognition and Ultrasound

Inclusion Criteria:

* 18 years of age or older
* Speak English (as assessed by their ability to read/answer survey questions)
* May be required to score in the appropriate range on self-report measures

Exclusion Criteria:

* They have a neurological disorder which may impact their fMRI scan or cause their reaction to LIFU to differ from that of healthy adults.
* They take any psychoactive medication.
* They are unable to undergo fMRI scanning due to a contraindication such as claustrophobia, unremovable piercings, pregnancy, the presence of medical devices such as pacemakers, or a movement or sleep disorder.
* Are pregnant, or may have reason to believe that they are pregnant.
* They have a diagnosis of a psychiatric condition other than depression or anxiety