Instinctive feelings, albeit brief (5)

I believe the answer is:
vibes
'instinctive feelings' is the definition.
'vibes' can be an answer for 'feelings' (vibe can mean a mood or feeling). I am unsure of the 'instinctive' bit.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for vibes that I've seen before include "Jazz percussion instrument - sensations" , "Percussion instrument similar to a xylophone" , "Feelings arising from surroundings etc" , "Feelings sensed intuitively" , "Mental or emotional sensations" .)
