Proven cardiac changes during death-feigning (tonic immobility) in rabbits (Oryctolagus cuniculus)

@article{Giannico2014ProvenCC,
  title={Proven cardiac changes during death-feigning (tonic immobility) in rabbits (Oryctolagus cuniculus)},
  author={Am{\'a}lia Turner Giannico and Leandro Lima and Rog{\'e}rio Ribas Lange and Tilde Rodrigues Froes and Fabiano Montiani-Ferreira},
  journal={Journal of Comparative Physiology A},
  year={2014},
  volume={200},
  pages={305-310}
}
Tonic immobility (TI) is a response to fear or threat by remaining motionless, principally when attacked by predators from which there is no possibility of escape. Thus, here we demonstrate a way of easily reproducing this phenomenon in a laboratory setting and characterize the cardiac electromechanical alterations during TI. We observed a significant decrease in heart rate (HR) and changes of rhythm in electrocardiogram during TI in rabbits. Echocardiogram showed a significant increase in the… 

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