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Electronic Letters to:
- BehavioralSystemsCognitive:
Tim Mentel, Lorenzo Cangiano, Sten Grillner, and Ansgar Büschges- Neuronal Substrates for State-Dependent Changes in Coordination between Motoneuron Pools during Fictive Locomotion in the Lamprey Spinal Cord
J. Neurosci. 2008; 28: 868-879[Abstract] [Full text] [PDF]
eLetters: Submit a response to this article
Electronic letters published:
Comments on network organisation
- David Parker (30 January 2008)
Comments on network organisation 30 January 2008 
David Parker,
Lecturer
University of CambridgeSend letter to journal:
Re: Comments on network organisation
djp27{at}cam.ac.uk David Parker
In the interests of fairness I think it is reasonable to draw attention to the network scheme shown in Figure 9. No citation is given for the claim that small ipsilateral inhibitory interneurons receive inputs from excitatory interneurons, a connection shown in Parker (2003). Given that other connections have supporting references it seems fair to draw attention to the omission of this citation.
Also, the crossing inhibitory interneuron input to the excitatory interneurons, which is repeatedly assumed in network schemes, has never actually been identified experimentally. This connection should thus be stippled along with the other hypothetical connections referred to in the legend to Figure 9. The specific details of the known connectivity in the segmental network are given in Buchanan (2001) or Parker (2006).
Buchanan J (2001) Contributions of identifiable neurons and neuron classes to lamprey vertebrate neurobiology. Prog Neurobiol 63:441-466.
Parker D (2003) Activity-Dependent Feedforward Inhibition Modulates Synaptic Transmission in a Spinal Locomotor Network. J Neurosci 23:11085- 11093.
Parker D (2006) Complexities and uncertainties of neuronal network function. Philosophical Transactions of the Royal Society B: Biological Sciences 361:81-99.
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