Are Fish Hippocampal-Like Networks Functionally Similar to Their Mammalian Counterparts?
Oct 04, 2019
Material below summarizes the article Cellular and Network Mechanisms May Generate Sparse Coding of Sequential Object Encounters in Hippocampal-Like Circuits, published on July 19, 2019, in eNeuro and authored by Anh-Tuan Trinh, Stephen E. Clarke, Erik Harvey-Girard, and Leonard Maler.
Highlights
- This is the first in vitro biophysical characterization of hippocampal-like (dorsal lateral telencephalon) neurons in a teleost fish.
- Neurons of the dorsal lateral telencephalon (DL) have a low-noise resting membrane potential (RMP) and rarely discharge in response to depolarizing input, suggesting DL computations use “sparse coding” neurons.
- DL neurons also possess a dynamic spike threshold, supporting the hypothesis that the DL network can encode sequences of discrete events — i.e., temporal sequences.
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About the Contributors
Anh-Tuan Trinh is a PhD candidate in neuroscience at the University of Ottawa in Canada.
Leonard Maler is a distinguished professor in the Department of Cellular and Molecular Medicine at the University of Ottawa.
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