Searching around you will find more hints for a leap in consciousness than sliding up. This is because the limit within humans belong to a left brain imbalance, you cannot have this imbalance and balance at same time. But you can wobble between both states for some time, what is a very hard experience.
Whole brain consciousness with balanced EEG is base for new abilities that need higher computing power, for example graphical thinking and communications. Same occurs for your angle of vision, the more data you can process, the more precise the output will be. Higher computing power will also boost the five senses above their limits. Through right brain side that is online now, you get the divine connection back to your insights. So this switch in mind is base for evolutionary change.
Man have choice to step down to experience the world as two legged animal, like written in the bible or to step upwards.