Recurrent Excitation of Secondary Olfactory Neurons: A Possible Mechanism for Signal Amplification

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Science  26 Feb 1971:
Vol. 171, Issue 3973, pp. 824-826
DOI: 10.1126/science.171.3973.824


Secondary neurons of the olfactory bulb can be excited monosynaptically after activation of neighboring secondary neurons by antidromic and orthodromic volleys. Recurrent collaterals of secondary neurons are proposed to synapse with other secondary neurons, thus forming a direct recurrent excitatory pathway. Such a positive feedback system could strengthen the original input signal.

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