Sleep Activity Pattern Zebra Finches (image) Max-Planck-Gesellschaft Caption A series of images (start, top left; end, bottom right) showing neuronal activity moving through the brain. Each image shows activity recorded at 64 points (8 x 8 grid) with more red colors indicating higher activity. At the start, a wave of activity sweeps across the recording array in a right to left direction and then dissipates. The wave then emerges again near the bottom center of the array and expands outward as a ring of activity as the plume passes perpendicular to the plane of the array. Credit MPI f. Ornithology/ Rattenborg Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.