The temporal horizons of consciousness are not the same as the width of the interval of time in which the 'now' is infused but are the multi-scaled senses of past and future in which the now takes itself as the central location. These horizons are less affected by mood and attunement although they do have some effect on cognition of music and of extended texts, they are in other words functions of 'working memory'. In dreams you probably encounter them at their functional minimum, the smallest lightening of time in which a sense of self can exist, even if just a flickering and discontinuous one. Below that, with no self, consciousness is no more than point qualia.