期刊
NEUROSCIENCE LETTERS
卷 558, 期 -, 页码 137-142出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2013.11.002
关键词
Autotomy; Cephalopod; Nociception; Octopus; Pain; Sensitization
资金
- NSF [IOS-1146987, IOS-1145478]
- The University of California, Berkeley Department of Integrative Biology and Graduate Division
- Graduate Center of the City University of New York
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1146987] Funding Source: National Science Foundation
Cephalopod molluscs are the most neurally and behaviorally complex invertebrates, with brains rivaling those of some vertebrates in size and complexity. This has fostered the opinion that cephalopods, particularly octopuses, may experience vertebrate-like pain when injured. However, it is not known whether octopuses possess nociceptors or if their somatic sensory neurons exhibit sensitization after injury. Here we show that the octopus Abdopus aculeatus expresses nocifensive behaviors including arm autotomy, and displays marked neural hyperexcitability both in injured and uninjured arms for at least 24 h after injury. These findings do not demonstrate that octopuses experience pain-like states; instead they add to the minimal existing literature on how cephalopods receive, process, and integrate noxious sensory information, potentially informing and refining regulations governing use of cephalopods in scientific research. Published by Elsevier Ireland Ltd.
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