Hebbian STDP in mushroom bodies facilitates the synchronous flow of olfactory information in locusts

Stijn Cassenaer and Gilles Laurent ()
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Stijn Cassenaer: California Institute of Technology, 139-74, Pasadena, California 91125, USA
Gilles Laurent: California Institute of Technology, 139-74, Pasadena, California 91125, USA

Nature, 2007, vol. 448, issue 7154, 709-713

Abstract: The memory of locusts Synaptic plasticity — the strengthening or weakening of connections between nerve cells — has been known in vertebrates to depend on whether inputs precede or follow a neuron's spiking, a phenomenon called 'spike timing-dependent plasticity' or STDP. Now Stijn Cassenaer and Gilles Laurent describe STDP for the first time in an invertebrate — the locust. Their in vivo study also shows that STDP is the key to the preservation of neural codes for olfactory information down the neuronal pathway linking sensory organs to memory centres in the brain. This finding sheds new light on the relationships between circuit dynamics, architecture and learning in the insect brain.

Date: 2007
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DOI: 10.1038/nature05973

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