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Article: Light exposure induces short- and long-term changes in the excitability of retinorecipient neurons in suprachiasmatic nucleus.

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LeSauter J; Silver R; Cloues R; Witkovsky P
J. Neurophysiol., 2011


Table 1.

Membrane properties of GFP-labeled (GFP+) cells

ZT 15:30–17:00 ZT 17:00–21:00 ZT 21:00–00:30
LP− LP+ LP− LP+ LP− LP+
Resting potential, mV −59.7 ± 1.6 −53.2 ± 1.0* −57.2 ± 0.7 −68.4 ± 1.9† −53.9 ± 1.6 −55.7 ± 1.2
n = 13 n = 36 n = 33 n = 51 n = 7 n = 11
Firing rate, Hz 0.49 ± 0.2 2.1 ± 0.3* 0.49 ± 0.2 0.12 ± 0.04† 1.48 ± 0.4 1.12 ± 0.4
Input resistance, GΩ 1.4 ± 0.1 1.5 ± 0.1 1.5 ± 0.1 1.9 ± 0.1* 1.8 ± 0.2 1.7 ± 0.1
n = 14 n = 18 n = 21 n = 37 n = 5 n = 8
Decay time constant, ms 27.7 ± 1.6 28.8 ± 2.3 29.0 ± 2.1 42.5 ± 2.7* 28.3 ± 4.6 31.6 ± 2.7

  • ↵Resting potential: *different from not been exposed to light (LP−) Zeitgeber time (ZT) 15:30–17:00 (P < 0.03); †different from LP− ZT 17:00–21:00 (P < 0.001), exposed to 1-h light pulse (LP+) ZT 15:30–17:00, LP− and LP+ ZT 21:00–00:30 (P < 0.001). Firing rate: *different from LP− ZT 15:30–17:00 (P = 0.01), LP− and LP+ ZT 17:00–21:00 (P = 0.001); †different from LP+ ZT 15:30–17:00 (P < 0.001), LP+ ZT 21:00–00:30 (P = 0.05), LP− ZT 21:00–00:30 (P = 0.02). Input resistance: *different from LP− ZT 17:00–21:00, LP+ ZT 15:00–17:00 (P < 0.05). Decay time constant: *different from LP− and LP+ ZT 15:30–17:00 (P = 0.003).


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron firing frequency (Hz) 0.49 ± 0.2 (13) 0.49 (Hz) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron firing frequency (Hz) 0.49 ± 0.2 (33) 0.49 (Hz) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron resting membrane potential (mV) -59.7 ± 1.6 (13) -59.7 (mV) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron firing frequency (Hz) 1.48 ± 0.4 (7) 1.48 (Hz) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron input resistance (GΩ) 1.4 ± 0.1 (13) 1400.0 (MΩ) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron input resistance (GΩ) 1.5 ± 0.1 (33) 1500.0 (MΩ) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron input resistance (GΩ) 1.8 ± 0.2 (7) 1800.0 (MΩ) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron membrane time constant (ms) 27.7 ± 1.6 (13) 27.7 (ms) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron membrane time constant (ms) 29.0 ± 2.1 (33) 29.0 (ms) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron resting membrane potential (mV) -57.2 ± 0.7 (33) -57.2 (mV) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron membrane time constant (ms) 28.3 ± 4.6 (7) 28.3 (ms) Data Table
Suprachiasmatic nucleus neuron Suprachiasmatic nucleus gastrin-releasing peptide expressing calbindin-D28K expressing neuron resting membrane potential (mV) -53.9 ± 1.6 (7) -53.9 (mV) Data Table