Clavinet sixteenths — the Stevie Wonder / "Superstition" way of using a keyboard as a rhythm guitar: a one-handed riff in the minor pentatonic, every note a short sixteenth, played on the clav's percussive attack with the other hand damping the strings. The riff here sits on G minor: a dyad on 1, then single notes bouncing between the flat seventh, root, flat third and fifth, with rests on the "e" and the "and" that leave holes for the drums. The second bar runs the same opening and then climbs to the F before falling back.
The kit is busy funk — kick on 1, the "a" of 1, the "and" of 2, the "e" of 3 and 3; snare on 2 and 4; hat eighths opening on the "and" of 4 — and the bass doubles the riff's low end with a b7–root turn.
Listen for the holes: a clav part is defined as much by the sixteenths it leaves out as by the ones it plays. Practice: play the riff staccato on a piano with the metronome on 2 and 4 only, then move to a clav sound. Compare funk-piano-16ths (the chordal version) and funk-guitar-scratch.