The discussion begins with a familiar and defensible characterization of the eureka moment, according to which it is the unexpected product of separate and often seemingly incompatible perspectives. The principal aim of the discussion is to explain how, so characterized, vision-related eureka moments can occur. To fulfill this aim, the discussion employs a notion of crosstalk, in which cognitive interference slightly increases as a result of the creative thinker's considerable, albeit only partly successful, pre-eureka cognitive effort. Such crosstalk, it is (...) suggested, is likely to occur when top-down visual imaging repeatedly stimulates pyramidal cells closely apposed to others that, although simultaneously active, are part of bottom-up visual perception that is initially cognitively unrelated to such imaging. It is further suggested that local circuitry, in the form of inhibitory interneurons, can synchronize cells associated with these initially separate processes, thus causing subsequent perceptual patterns to be subtly modified by pre-eureka problem-solving imagery. This modification, it is claimed, may help explain the unexpected shift in visual perception that accompanies the creative thinker's eureka moment, a shift that can improve the thinker's subsequent understanding of the relevance of information to a problem's solution. (shrink)