We reported a novel finding termed the dissociative effect (SFN, 2002). After induction to two static full-field patterns--red horizontal (h) stripes and achromatic (achr.) h stripes--, alternating with a 10s-10s induction cycle (ind. cyc.) for 20 min. total, test h stripes appeared redder and test vertical (v) stripes greener than before, contrary to past reports (McCollough, 1965). Here, we explore four possible mechanisms. There may be a high but transient neural response to the red h, but a weak but sustained response to the immediate greenish h (reddish v) aftereffect (AE). It is claimed that the longer the response, the longer its AE will last, which explains the AE of the AE or after-aftereffect (AAE, or dissociative AE: reddish h, greenish v). Thus, a shorter 2s-2s ind. cyc. should reduce or even reverse the dissociative AE. However, it remained unabated. A second model claims that, as the presented color activates the brain more than does its weaker AE, it should be inhibited more, which would fav...