Brief Communication Rapid and persistent suppression of feeding behavior induced by sensitization training in Aplysia
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چکیده
Rapid and persistent suppression of feeding behavior induced by sensitization training in Aplysia Ama Acheampong, Kathleen Kelly, Maria Shields-Johnson, Julie Hajovsky, Marcy Wainwright, and Riccardo Mozzachiodi Department of Life Sciences, Texas A&M University-Corpus Christi, Corpus Christi, Texas 78412, USA; Houston Community College, Houston, Texas 77002, USA; Endicott College, Beverly, Massachusetts 01915, USA
منابع مشابه
Rapid and persistent suppression of feeding behavior induced by sensitization training in Aplysia.
In Aplysia, noxious stimuli induce sensitization of defensive responses. However, it remains largely unknown whether such stimuli also alter nondefensive behaviors. In this study, we examined the effects of noxious stimuli on feeding. Strong electric shocks, capable of inducing sensitization, also led to the suppression of feeding. The use of multiple training protocols revealed that the time c...
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In Aplysia, repeated trials of aversive stimuli produce long-term sensitization (LTS) of defensive reflexes and suppression of feeding. Whereas the cellular underpinnings of LTS have been characterized, the mechanisms of feeding suppression remained unknown. Here, we report that LTS training induced a long-term decrease in the excitability of B51 (a decisionmaking neuron in the feeding circuit)...
متن کاملLong-term sensitization training in Aplysia decreases the excitability of a decision-making neuron through a sodium-dependent mechanism.
In Aplysia, long-term sensitization (LTS) occurs concurrently with a suppression of feeding. At the cellular level, the suppression of feeding is accompanied by decreased excitability of decision-making neuron B51. We examined the contribution of voltage-gated Na+ and K+ channels to B51 decreased excitability. In a pharmacologically isolated Na+ channels environment, LTS training significantly ...
متن کاملEffects of aversive stimuli beyond defensive neural circuits: reduced excitability in an identified neuron critical for feeding in Aplysia.
In Aplysia, repeated trials of aversive stimuli produce long-term sensitization (LTS) of defensive reflexes and suppression of feeding. Whereas the cellular underpinnings of LTS have been characterized, the mechanisms of feeding suppression remained unknown. Here, we report that LTS training induced a long-term decrease in the excitability of B51 (a decision-making neuron in the feeding circuit...
متن کاملLevels of serotonin in the hemolymph of Aplysia are modulated by light/dark cycles and sensitization training.
Serotonin (5-hydroxytryptamine, 5-HT) modulates the behavior and physiology of both vertebrate and invertebrate animals. Effects of injections of 5-HT and the morphology of the serotonergic system of Aplysia indicate that 5-HT may have a humoral, in addition to a neurotransmitter, role. To study possible humoral roles of 5-HT, we measured 5-HT in the hemolymph. The concentration of 5-HT in the ...
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