TY - JOUR
T1 - Modification of the tail flip escape response in crayfish by neuromodulation and behavioral state with and without descending CNS input
AU - Pagé, Maurice Pierre
AU - Hailes, Walter
AU - Cooper, Robin L.
PY - 2007
Y1 - 2007
N2 - The neural circuitry used during the tail flip behavior of crayfish continues to serve as a model for investigating sensory integration and the actions of neuromodulators. Systemic injections of 5-HT produce an increase in responsiveness to sensory stimuli and decrease the rate of sensory habituation of the tail flip. In behaving animals the loss of the chelipeds also promotes a greater responsiveness to tail flipping on sensory stimulation of the telson. By transecting the Ventral Nerve Cord (VNC) it was demonstrated that the animals were less responsive to the tail flip reflex, implying that the sensory-VNC-motor circuit for the tail flip can be modulated in the animals by higher command neurons. However, the CNS isolated neuronal circuitry of the tail was still responsive to 5-HT. The results imply that there is direct CNS regulation as well possible hormonal action in intact behaving animals and that factors which alter one or the other could impinge on the tail flip escape behavior.
AB - The neural circuitry used during the tail flip behavior of crayfish continues to serve as a model for investigating sensory integration and the actions of neuromodulators. Systemic injections of 5-HT produce an increase in responsiveness to sensory stimuli and decrease the rate of sensory habituation of the tail flip. In behaving animals the loss of the chelipeds also promotes a greater responsiveness to tail flipping on sensory stimulation of the telson. By transecting the Ventral Nerve Cord (VNC) it was demonstrated that the animals were less responsive to the tail flip reflex, implying that the sensory-VNC-motor circuit for the tail flip can be modulated in the animals by higher command neurons. However, the CNS isolated neuronal circuitry of the tail was still responsive to 5-HT. The results imply that there is direct CNS regulation as well possible hormonal action in intact behaving animals and that factors which alter one or the other could impinge on the tail flip escape behavior.
KW - Behavior
KW - Crayfish
KW - Crustacean
KW - Neuromodulation
KW - Octopamine
KW - Serotonin
UR - http://www.scopus.com/inward/record.url?scp=37649017898&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=37649017898&partnerID=8YFLogxK
U2 - 10.3923/ijzr.2007.132.144
DO - 10.3923/ijzr.2007.132.144
M3 - Article
AN - SCOPUS:37649017898
SN - 1811-9778
VL - 3
SP - 132
EP - 144
JO - International Journal of Zoological Research
JF - International Journal of Zoological Research
IS - 3
ER -