PERFORATED patch clamp recordings of neurons in slices of the suprachiasmatic nucleus (SCN) were made in their subjective day and night phases. The spontaneous firing rate and input resistance were significantly higher during the subjective day as compared to the subjective night. Ln parallel, the membrane potential of neurons recorded at daytime was significantly more depolarized than at nighttime. The day-night differences in membrane potential and input resistance were maintained when spikes and GABAA receptor-mediated transmission were blocked by tetrodotoxin and bicuculline, suggesting a cell-autonomous regulation of the circadian modulation of membrane properties. In conclusion, these findings suggest that at least one hyperpolarizing ionic conductance would be open at night and closed during mid-day, when spontaneous firing reaches peak levels in the SCN. NeuroReport 9: 3725-3729 (C) 1998 Lippincott Williams & Wilkins.
机构:Nagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, Japan
Watanabe, T
Yoshimura, T
论文数: 0引用数: 0
h-index: 0
机构:Nagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, Japan
Yoshimura, T
McMahon, DG
论文数: 0引用数: 0
h-index: 0
机构:Nagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, Japan
McMahon, DG
Ebihara, S
论文数: 0引用数: 0
h-index: 0
机构:
Nagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, JapanNagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, Japan
机构:
Nagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
Ono, Daisuke
Honma, Ken-ichi
论文数: 0引用数: 0
h-index: 0
机构:
Hokkaido Univ, Res & Educ Ctr Brain Sci, Grad Sch Med, Sapporo, Hokkaido 0608638, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
Honma, Ken-ichi
Yanagawa, Yuchio
论文数: 0引用数: 0
h-index: 0
机构:
Gunma Univ, Dept Genet & Behav Neurosci, Grad Sch Med, Maebashi, Gunma 3718511, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
Yanagawa, Yuchio
Yamanaka, Akihiro
论文数: 0引用数: 0
h-index: 0
机构:
Nagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
Yamanaka, Akihiro
Honma, Sato
论文数: 0引用数: 0
h-index: 0
机构:
Hokkaido Univ, Res & Educ Ctr Brain Sci, Grad Sch Med, Sapporo, Hokkaido 0608638, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
机构:Nagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, Japan
Watanabe, T
Yoshimura, T
论文数: 0引用数: 0
h-index: 0
机构:Nagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, Japan
Yoshimura, T
McMahon, DG
论文数: 0引用数: 0
h-index: 0
机构:Nagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, Japan
McMahon, DG
Ebihara, S
论文数: 0引用数: 0
h-index: 0
机构:
Nagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, JapanNagoya Univ, Grad Sch Bioagr Sci, Div Biomodeling, Nagoya, Aichi 4648601, Japan
机构:
Nagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
Ono, Daisuke
Honma, Ken-ichi
论文数: 0引用数: 0
h-index: 0
机构:
Hokkaido Univ, Res & Educ Ctr Brain Sci, Grad Sch Med, Sapporo, Hokkaido 0608638, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
Honma, Ken-ichi
Yanagawa, Yuchio
论文数: 0引用数: 0
h-index: 0
机构:
Gunma Univ, Dept Genet & Behav Neurosci, Grad Sch Med, Maebashi, Gunma 3718511, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
Yanagawa, Yuchio
Yamanaka, Akihiro
论文数: 0引用数: 0
h-index: 0
机构:
Nagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
Yamanaka, Akihiro
Honma, Sato
论文数: 0引用数: 0
h-index: 0
机构:
Hokkaido Univ, Res & Educ Ctr Brain Sci, Grad Sch Med, Sapporo, Hokkaido 0608638, JapanNagoya Univ, Environm Med Res Inst, Dept Neurosci 2, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan