Before revision:  We employed this system to investigate, in real-time on a brain-wide scale, the onset and propagation of acute seizures, as induced by the convulsant drug pentylenetetrazol (PTZ), avoiding detrimental visual stimulation on a highly susceptible system such as an epileptic brain. ...
After revision:  while keeping low the laser intensity on the specimen. We applied our system to the study of pharmacologically-induced acute seizures, as induced by the convulsant drug pentylenetetrazol (PTZ), avoiding detrimental visual stimulation on a highly susceptible system such as an epileptic brain. ...