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Article: Milk ejection burst-like electrical activity evoked in supraoptic oxytocin neurons in slices from lactating rats.

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Wang YF; Hatton GI
J. Neurophysiol., 2004



TABLE 2.Changes in the electrical features of SON OT neurons from lactating rats in response to the low-Ca2+ solution and phenylephrine
MP
Spikes
AHP

Level, mV
Amp, mV
50% Amp Width, ms
Rise τ, ms
Decay τ, ms
Instant-Freq
Freq, Hz
Amp, -mV
50% Amp Width, ms
Rise τ, ms
Decay τ, ms
Control 55.9 ± 0.67 60.7 ± 1.9 1.7 ± 0.2 0.85 ± 0.26 7.3 ± 2.64 3.8 ± 2.3 0.4 ± 0.26 8.8 ± 1.15 25.9 ± 3.84 1.9 ± 0.4 137.8 ± 59.64
Low-Ca2+
ACSF 51.4 ± 0.92 58.2 ± 1.74 1.9 ± 0.21 1.2 ± 0.51 10.9 ± 5.3 8.9 ± 2.57 3.4 ± 2.77 8.9 ± 0.76 32.7 ± 4.76 6.1 ± 4.33 147.9 ± 41.53
Phenylephrine 1 49.1 ± 1.12 54.1 ± 2.27 1.9 ± 0.19 1.1 ± 0.27 11.4 ± 5.58 14.3 ± 2.3 3.3 ± 1.53 8.8 ± 0.84 40.5 ± 4.88 2.2 ± 0.3 161 ± 41.56
Low-Ca2+
ACSF 50.2 ± 1.26 56.0 ± 2.03 2.0 ± 0.22 1.3 ± 0.27 11.8 ± 5.66 15.5 ± 4.7 1.9 ± 0.64 9.3 ± 0.84 38.2 ± 5.18 5.9 ± 3.66 305.8 ± 102.64
Phenylephrine 2 48.9 ± 1.43 55.4 ± 2.29 2.2 ± 0.25 2.3 ± 1.06 10.6 ± 2.89 18.0 ± 3.51 3.5 ± 1.39 9.1 ± 1.07 37.1 ± 4.01 3.4 ± 1.0 178.1 ± 35.48
Low-Ca2+
ACSF 49.1 ± 0.76 55.0 ± 2.36 2.2 ± 0.24 3.1 ± 1.54 10.6 ± 2.08 15.7 ± 3.13 2.0 ± 0.71 9.6 ± 1.04 36.5 ± 4.98 9.8 ± 7.17 431.8 ± 193.2
Phenylephrine 3 48.3 ± 1.67 53.4 ± 2.01 2.2 ± 0.25 2.3 ± 0.76 12.7 ± 3.18 17.9 ± 3.35 4.0 ± 1.63 9.0 ± 1.05 37.9 ± 3.83 2.8 ± 0.45 329.4 ± 108.3
Low-Ca2+
ACSF 48.5 ± 1.51 56.0 ± 2.29 2.6 ± 0.51 3.9 ± 1.73 13.7 ± 3.5 12.4 ± 2.5 1.8 ± 0.7 9.5 ± 1.08 33.7 ± 5.08 35.8 ± 30.32 495.8 ± 217.28
Washout
52.3 ± 1.05
47.8 ± 3.07
2.2 ± 0.25
2.3 ± 0.69
11.7 ± 1.9
4.2 ± 2.27
0.6 ± 0.61
9.4 ± 1.13
37.5 ± 4.74
2.8 ± 0.42
61.8 ± 17
Upon the sequential application of phenylephrine in low-Ca2+ ACSF, average levels of all the parameters changed significantly (P < 0.05-0.01, evaluated by ANOVA, n = 15). Values are means ± SE. MP, membrane potential; AHP, afterhyperpolarization; τ, time constant; Instant Freq, Instantaneous frequency; other abbreviations are the same as Table 1.

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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Hypothalamus oxytocin neuroendocrine magnocellular cell supraoptic nucleus oxytocin-releasing cell resting membrane potential (mV) 55.9 ± 0.67 (16) -55.9 (mV) Data Table
Hypothalamus oxytocin neuroendocrine magnocellular cell supraoptic nucleus oxytocin-releasing cell spike amplitude (mV) 60.7 ± 1.9 (16) 60.7 (mV) Data Table
Hypothalamus oxytocin neuroendocrine magnocellular cell supraoptic nucleus oxytocin-releasing cell spike half-width (ms) 1.7 ± 0.2 (16) 1.7 (ms) Data Table
Hypothalamus oxytocin neuroendocrine magnocellular cell supraoptic nucleus oxytocin-releasing cell spike rise time (ms) 0.85 ± 0.26 (16) 0.85 (ms) Data Table
Hypothalamus oxytocin neuroendocrine magnocellular cell supraoptic nucleus oxytocin-releasing cell spike decay time (ms) 7.3 ± 2.64 (16) 7.3 (ms) Data Table
Hypothalamus oxytocin neuroendocrine magnocellular cell supraoptic nucleus oxytocin-releasing cell maximum firing rate 3.8 ± 2.3 (16) 3.8 (Hz) Data Table
Hypothalamus oxytocin neuroendocrine magnocellular cell supraoptic nucleus oxytocin-releasing cell firing frequency (Hz) 0.4 ± 0.26 (16) 0.4 (Hz) Data Table
Hypothalamus oxytocin neuroendocrine magnocellular cell supraoptic nucleus oxytocin-releasing cell AHP amplitude (-mV) 8.8 ± 1.15 (16) 8.8 (mV) Data Table