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J Neurophysiol 85: 2289-2292, 2001;
0022-3077/01 $5.00
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The Journal of Neurophysiology Vol. 85 No. 5 May 2001, pp. 2289-2292
Copyright ©2001 by the American Physiological Society

RAPID COMMUNICATION

Effects of Characteristic Dendritic Tip Geometry on the Electrical Properties of Teleost Thalamic Neurons

Hidekazu Tsutsui and Yoshitaka Oka

Misaki Marine Biological Station, Graduate School of Science, University of Tokyo, Kanagawa 238-0225, Japan

Tsutsui, Hidekazu and Yoshitaka Oka. Effects of Characteristic Dendritic Tip Geometry on the Electrical Properties of Teleost Thalamic Neurons. J. Neurophysiol. 85: 2289-2292, 2001. Of the factors that characterize the properties and functions of neurons, dendritic geometry is one of the most critical. We used simulations employing the multi-compartment model to study the effects of dendritic tip geometry on the electrical properties of the "large cell" in a teleost thalamic nucleus from the corpus glomerulosum. We demonstrated a dramatic geometrical "boosting" effect; passive propagation of the synaptic inputs from the dendritic tip to the soma through the dendritic stalk is less attenuated in cells with larger tips.




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H. Tsutsui and Y. Oka
Slow removal of Na+ channel inactivation underlies the temporal filtering property in the teleost thalamic neurons
J. Physiol., March 15, 2002; 539(3): 743 - 753.
[Abstract] [Full Text] [PDF]


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