Nociceptive Pathway in the Cockroach Periplaneta americana
| Autor: | Frederic Libersat, Stav Emanuel |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
nociceptive receptor Cord Physiology media_common.quotation_subject Sensory system Insect Nerve conduction velocity lcsh:Physiology 03 medical and health sciences 0302 clinical medicine Physiology (medical) biology.animal Noxious stimulus nociception nocifensive behavior Original Research media_common Cockroach biology interneurons lcsh:QP1-981 biology.organism_classification 030104 developmental biology Nociception nervous system extracellular recording insect Neuroscience 030217 neurology & neurosurgery Periplaneta |
| Zdroj: | Frontiers in Physiology, Vol 10 (2019) Frontiers in Physiology |
| DOI: | 10.3389/fphys.2019.01100/full |
| Popis: | Detecting and avoiding environmental threats such as those with a potential for injury is of crucial importance for an animal’s survival. In this work, we examine the nociceptive pathway in an insect, the cockroach Periplaneta americana, from detection of noxious stimuli to nocifensive behavior. We show that noxious stimuli applied to the cuticle of cockroaches evoke responses in sensory axons that are distinct from tactile sensory axons in the sensory afferent nerve. We also reveal differences in the evoked response of post-synaptic projection interneurons in the nerve cord to tactile versus noxious stimuli. Noxious stimuli are encoded in the cockroach nerve cord by fibers of diameter different from that of tactile and wind sensitive fibers with a slower conduction velocity of 2–3 m/s. Furthermore, recording from the neck-connectives show that the nociceptive information reaches the head ganglia. Removing the head ganglia results in a drastic decrease in the nocifensive response indicating that the head ganglia and the nerve cord are both involved in processing noxious stimuli. |
| Databáze: | OpenAIRE |
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