Experimental Set (IMAGE) Pensoft Publishers Caption This image shows the design of one experimental set. Dashed arrows symbolize repeated stimuli applied if previous stimulus did not evoke tonic immobility. Experimental sets were applied repeatedly over a three week period; each individual was exposed to five experimental sets with 4 days intervals between. Credit Dr. Ivan Hadrián Tuf Usage Restrictions CC-BY 4.0 License Licensed content 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.