Presentation 2012-07-31
Subthalamic nucleus neuron model displaying a dopamine-depedent change in neural responses
Hironori SAKURAI, Katsunori KITANO,
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Abstract(in English) In the subthalamic nucleus (STN) neuron, it has been reported that dopamine depletion influences activation of some ion channels. In this study, we constructed the STN neuron model exhibiting dopamine-dependent responses in order to investigate relationship between the neuron's dopamine-dependent behavior and Parkinson's Disease. Our result suggested that HCN channels deficiency induced strong rebound burst firings and down-regulation of Cav2.2 channels prevented Na^+ channels from being sufficiently recovered. This meant that available Na^+ channels were decreased and caused reduction of the velocity during action potential generation. Therefore, under the dopamine depleted condition, the STN neuron model is likely to be more strongly affected by background noise, and consequently to exhibit an irregular spontaneous activity.
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Keyword(in English) Subthalamic nucleus neuron / Parkinson's disease / HCN channels Cav2.2 channels / Navl.6 sodium channels
Paper # NC2012-20
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Committee NC
Conference Date 2012/7/23(1days)
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Registration To Neurocomputing (NC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Subthalamic nucleus neuron model displaying a dopamine-depedent change in neural responses
Sub Title (in English)
Keyword(1) Subthalamic nucleus neuron
Keyword(2) Parkinson's disease
Keyword(3) HCN channels Cav2.2 channels
Keyword(4) Navl.6 sodium channels
1st Author's Name Hironori SAKURAI
1st Author's Affiliation Graduate school of Science and Engineering, Ritsumeikan University()
2nd Author's Name Katsunori KITANO
2nd Author's Affiliation Department of Human and Computer Intelligence, Ritsumeikan University
Date 2012-07-31
Paper # NC2012-20
Volume (vol) vol.112
Number (no) 168
Page pp.pp.-
#Pages 5
Date of Issue