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J Neurophysiol 90: 3547-3554, 2003. First published August 13, 2003; doi:10.1152/jn.00645.2003
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A Learning and Memory Area in the Octopus Brain Manifests a Vertebrate-Like Long-Term Potentiation

Binyamin Hochner1, Euan R. Brown2, Marina Langella2, Tal Shomrat1 and Graziano Fiorito2

1Department of Neurobiology, Institute of Life Sciences and the Interdisciplinary Center for Neural Computation, Hebrew University, Jerusalem 91904, Israel; and 2Neurobiology Laboratory, Stazione Zoologica, `A. Dohrn' Villa Comunale, I-80121 Napoli, Italy

Submitted 7 July 2003; accepted in final form 6 August 2003

Cellular mechanisms underlying learning and memory were investigated in the octopus using a brain slice preparation of the vertical lobe, an area of the octopus brain involved in learning and memory. Field potential recordings revealed long-term potentiation (LTP) of glutamatergic synaptic field potentials similar to that in vertebrates. These findings suggest that convergent evolution has led to the selection of similar activity-dependent synaptic processes that mediate complex forms of learning and memory in vertebrates and invertebrates.

Address for reprint requests and other correspondence: B. Hochner, Dept. of Neurobiology, Institute of Life Sciences, Hebrew Univ., Jerusalem 91904, Israel (E-mail: bennyh{at}lobster.ls.huji.ac.il).




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