A newly identified part of a brain circuit mixes sensory information, memories, and emotions to tell whether things are familiar or new, and important or just 'background noise.' ...

Imagine seeing a furry, four-legged animal that meows. Mentally, you know what it is, but the word 'cat' is stuck on the tip of your tongue. This phenomenon, known as Broca's aphasia or expressive ...

Optic Neuritis: Clinical Features Optic neuritis refers to inflammation of the optic nerve. The term may be used broadly in reference to many causes of optic nerve inflammation including systemic ...