Abstract:
:Central mechanisms by which specific motor programs are selected to achieve meaningful behaviors are not well understood. Using electrophysiological recordings from pharyngeal nerves upon central activation of neurotransmitter-expressing cells, we show that distinct neuronal ensembles can regulate different feeding motor programs. In behavioral and electrophysiological experiments, activation of 20 neurons in the brain expressing the neuropeptide hugin, a homolog of mammalian neuromedin U, simultaneously suppressed the motor program for food intake while inducing the motor program for locomotion. Decreasing hugin neuropeptide levels in the neurons by RNAi prevented this action. Reducing the level of hugin neuronal activity alone did not have any effect on feeding or locomotion motor programs. Furthermore, use of promoter-specific constructs that labeled subsets of hugin neurons demonstrated that initiation of locomotion can be separated from modulation of its motor pattern. These results provide insights into a neural mechanism of how opposing motor programs can be selected in order to coordinate feeding and locomotive behaviors.
journal_name
PLoS Bioljournal_title
PLoS biologyauthors
Schoofs A,Hückesfeld S,Schlegel P,Miroschnikow A,Peters M,Zeymer M,Spieß R,Chiang AS,Pankratz MJdoi
10.1371/journal.pbio.1001893subject
Has Abstractpub_date
2014-06-24 00:00:00pages
e1001893issue
6eissn
1544-9173issn
1545-7885pii
PBIOLOGY-D-14-00605journal_volume
12pub_type
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