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J Neurophysiol (August 13, 2003). doi:10.1152/jn.00645.2003
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Submitted on July 7, 2003
Accepted on August 6, 2003

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

1 Department of Neurobiology, Hebrew University, Jerusalem, Israel
2 Neurobiology Laboratory, Stazione Zoologica, Naples, Italy

* To whom correspondence should be addressed. E-mail: bennyh{at}lobster.ls.huji.ac.il.

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.




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