Two individuals who endow each other with wit become mentally linked.
She is the ward of, and mentally linked to, her Mentor, a giant and ancient dolphin that lives in an underwater cell.
The Silver Surfer's surfboard, his source of power which he is mentally linked to.
The gem was mentally linked to her, giving her the potential power to control time.
As soon as she and the symbiont linked mentally, her entire persona would be changed.
They were mentally linked; there was no logic in being evasive.
"We haven't been mentally linked to either of them for a long time," said Ruby.
These are based on the modern psychological concept of associativity: Stimuli presented closely in time or space become mentally linked over time and repeated exposure.
Hand in hand, they walked in companionable silence, still linked mentally.
But I hate to think of what it must have been like for the group-members as a whole while they were mentally linked to their dying friends.