to make better

(a)  

to produce

(a)  

conditions that affect brain functions

(a)  

a means to exchange digital information

(a)  

a message sent along a nerve cell

(a)  

a cell capable of becoming many different cell types

(a)  

a device or software related to the brain

(a)  

to use

(a)  

active

(a)  

encourage increased activity

(a)