To measure the action of pentylenetetrazol Ahlgren proposed to employ its awakening action against central depressants.    From Wordnik.com.  [Arvid Carlsson - Autobiography] Reference

Georg Theander, a topic to investigate, i.e. to measure the duration of action of pentylenetetrazol (Cardiazol), a convulsant at that time frequently used as an "artaleptic" to wake up people who had taken an overdose of a hypnotic or sedative, and also used as a forerunner of electroconvulsive therapy.    From Wordnik.com.  [Arvid Carlsson - Autobiography] Reference

So I ran gerbils through a maze, timed them, and then injected them with Metrazol (the brand name for pentylenetetrazol, a central nervous system stimulant), and then ran them through the maze again.    From Wordnik.com.  [A Life in Pages] Reference