Shining a Light on Astrocytes (image) NIH/National Institute of Neurological Disorders and Stroke Share Print E-Mail Caption This image is an artist's representation of an astrocyte. The light flashes represent changing calcium levels. Credit Image courtesy of Baljit S. Khakh, Ph.D., University of California, Los Angeles. Usage Restrictions For educational use only. Share Print E-Mail 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.