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Article: The synaptic representation of sound source location in auditory cortex.

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Chadderton P; Agapiou JP; McAlpine D; Margrie TW
J. Neurosci., 2009


Table 2.

Properties of evoked synaptic and spiking responses with respect to azimuth in auditory cortical pyramidal cells

Property of evoked response Contralateral (−78.75°) Center (0°) Ipsilateral (−78.75°) p value
EPSP amplitude (mV) 5.38 ± 0.62 5.03 ± 0.65 4.64 ± 0.65 0.21
EPSP rising slope (Vs) 1.02 ± 0.19 0.75 ± 0.13 0.48 ± 0.09 6.2 × 10−7
EPSP onset latency (ms) 17.7 ± 0.4 18.1 ± 0.5 18.5 ± 0.3 4.0 × 10−7
EPSP peak latency (ms) 26.9 ± 1.2 30.3 ± 1.6 35.5 ± 1.7 8.0 × 10−4
AP probability (APs/trial) 0.42 ± 0.09 0.38 ± 0.08 0.31 ± 0.07 0.52
AP latency (ms) 26.6 ± 3.2 33.4 ± 3.7 35.0 ± 2.3 0.082*
SD of AP latency (ms) 4.1 ± 1.5 7.2 ± 1.6 10.0 ± 2.0 0.047*
  • Statistical differences were calculated using Friedman's or *Kruskal–Wallis test (n = 22 for EPSP properties, n = 14 for AP properties).


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