Yes. Kāmehi being the—five sensuous (kāma)—mental "sense objects."
(not the 6th sense of the mind, due to being kāma, and obviously not the senses themselves)
Although... vivicceva might not be the complete seclusion from the five different kāma:
Vivicca (indecl.) [ger. of viviccati] separating oneself from (in- str.), aloof from D i.37; A iii.25; J vi.388; Dhs 160; Pug 68; Vism 139, 140 (expld in detail). — Doubtful reading at Pv i.119 (for viricca?). — As viviccaṁ (& a°) at J v.434 in mean- ing "secretly" (=raho paṭicchannaṁ C.).
Still, "vivicceva kāmehi" is before entering jhāna—and it wouldn't be surprising for the complete and further seclusion to happen once in actual jhāna.Viviccati [vi+vic] to separate oneself, to depart from, to be alone, to separate (intrs.) Vin iv.241; ger. viviccitvā DhsA 165, & vivicca (see sep.). — pp. vivitta. — Cp. viveceti.
Here, secluded from sensual pleasures, secluded from unwholesome states, a bhikkhu enters and dwells in the first jhāna
Idha, bhikkhave, ariyasāvako vivicceva kāmehi vivicca akusalehi dhammehi savitakkaṁ savicāraṁ vivekajaṁ pītisukhaṁ paṭhamaṁ jhānaṁ upasampajja viharati