cataplexy | definition

lack of muscle tone or muscle weakness, and in some cases complete paralysis of the voluntary muscles


Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020). Psychology 2e. Houston, Texas: OpenStax. Access for free at


Research Article: Anomalous Hypothalamic Responses to Humor in Cataplexy

Date Published: May 21, 2008 Publisher: Public Library of Science Author(s): Allan L. Reiss, Fumiko Hoeft, Adam S. Tenforde, Wynne Chen, Dean Mobbs, Emmanuel J. Mignot, Ernest Greene. Abstract: Cataplexy is observed in a subset of patients with narcolepsy and affects approximately 1 in 2,000 persons. Cataplexy is most often triggered by strong emotions such … Continue reading

Research Article: Differences in Brain Morphological Findings between Narcolepsy with and without Cataplexy

Date Published: November 28, 2013 Publisher: Public Library of Science Author(s): Masaki Nakamura, Shingo Nishida, Kenichi Hayashida, Yoichiro Ueki, Yves Dauvilliers, Yuichi Inoue, Oscar Arias-Carrion. Abstract: Maps of fractional anisotropy (FA) and apparent diffusion coefficient (ADC) obtained by diffusion tensor imaging (DTI) can detect microscopic axonal changes by estimating the diffusivity of water molecules … Continue reading

Research Article: Low Vitamin D in Narcolepsy with Cataplexy

Date Published: May 25, 2011 Publisher: Public Library of Science Author(s): Bertrand Carlander, Anne Marie Puech-Cathala, Isabelle Jaussent, Sabine Scholz, Sophie Bayard, Valérie Cochen, Yves Dauvilliers, Kenji Hashimoto. Abstract: Narcolepsy with cataplexy (NC) is currently thought to be an autoimmune-mediated disorder in which environmental risk factors make a significant contribution to its development. It was … Continue reading

Research Article: Non-Dipping Blood Pressure Profile in Narcolepsy with Cataplexy

Date Published: June 29, 2012 Publisher: Public Library of Science Author(s): Yves Dauvilliers, Isabelle Jaussent, Benjamin Krams, Sabine Scholz, Stéphane Lado, Patrick Levy, Jean Louis Pepin, Yoko Hoshi. Abstract: Patients with narcolepsy-cataplexy (NC) mostly exhibit undetectable hypocretin levels. Hypocretin system is one of the key players in the complex interaction between sleep and the cardiovascular … Continue reading