pontine neuron P1a [FBbt_00007527]

Adult fan-shaped body horizontal delta neuron that arborizes in the central layer of the fan-shaped body (Hanesch et al., 1989; Young and Armstrong, 2010). Its soma is found at the same height in the posterior cell body rind (Hanesch et al., 1989). On entering the fan-shaped body, its projection bifurcates, one branch running anteriorly through one segment and arborizing there with spines, the other running along the caudal surface across the midline and sending blebbed endings into a segment that is separated from the ipsilateral segment by half the width of the fan-shaped body (Hanesch et al., 1989).
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pontine neuron P1a

ID: FBbt_00007527

Adult Nervous system Neuron

Adult fan-shaped body horizontal delta neuron that arborizes in the central layer of the fan-shaped body (Hanesch et al., 1989; Young and Armstrong, 2010). Its soma is found at the same height in the posterior cell body rind (Hanesch et al., 1989). On entering the fan-shaped body, its projection bifurcates, one branch running anteriorly through one segment and arborizing there with spines, the other running along the caudal surface across the midline and sending blebbed endings into a segment that is separated from the ipsilateral segment by half the width of the fan-shaped body (Hanesch et al., 1989).

See Figure 8 of Hanesch et al. (1989). Previously described as innervating the central layer (layer 3 of 6) (Hanesch et al., 1989; Young and Armstrong, 2010). Not clear which layer(s) this neuron innervates in the Wolff et al. (2015) 9-layer model.

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