Fig. 5.

Lactate release recorded in cortical slices of animals killed during the light and the dark phases of the 24 h cycle. A) Representative recordings and B) summary data of net lactate biosensor currents after biosensor placement in the direct contact with the surface of the cortical slices (recording tonic lactate release) prepared from the brains of animals during the light phase (sleep/low activity) and dark phase (wakefulness).