  In each case the aim is to explain how organization and activity at the relevant neural level could underlie one or another major type or feature of consciousness. Global fields or transient synchronous assemblies could underlie the intentional unity of phenomenal consciousness. NMDA-based plasticity, specific thalamic projections into the cortex, or regular oscillatory waves could all contribute to the formation of short term but widespread neural patterns or regularities needed to knit integrated conscious experience out of the local activity in diverse specialized brain modules. Left hemisphere interpretative processes could provide a basis for narrative forms of conscious self-awareness. Thus it is possible for multiple distinct neural theories to all be true, with each contributing some partial understanding of the links between conscious mentality in its diverse forms and the active brain at its many levels of complex organization and structure.