Auditory Brainstem Response (ABR) measurement for Dusp4tm1a(EUCOMM)WtsiMouse GP

Results Summary

  • ABR thresholds normal
  • Click-ABR waveforms normal

Methods Summary

  • Auditory Brainstem Responses (ABRs) are recorded via subcutaneous needle electrodes placed at the vertex and behind the left ear, as an average of 256 responses to presentation of freefield stimuli [clicks (10us) or tone pips (5ms tone pips, 1ms rise/fall time)], presented at 42.2/sec.
  • ABR Thresholds are determined and plotted as a function of stimulus. Mean threshold is plotted (+/- population standard deviation). The green shaded area indicates the median threshold (and 2.5% to 97.5% reference range) of a large population of wildtype mice of this genetic background.
  • Click-Evoked ABRs waveforms were analysed. Superimposed waveforms recorded at 20dB and 50dB sensation level were plotted. Amplitudes and Latencies for waves P1, N1, P3 and N3 were recorded and were plotted as a function of dB sensation level. Means are plotted (over a 95% reference range for each parameter).

ABR Thresholds Summary

ABR Thresholds for Dusp4<tm1a(EUCOMM)Wtsi> mutants and controls

ABR Thresholds and Waveforms

Subjects
Mouse Name Mouse Barcode Genotype Gender Age click 6kHz 12kHz 18kHz 24kHz 30kHz
MCUD28.3e M00650742 Dusp4/Dusp4(locked) Female 13.6 20 40 25 15 20 35
MCUD29.2g M00650750 Dusp4/Dusp4(locked) Female 13.6 25 40 25 20 30 40
MCUD31.1c M00650754 Dusp4/Dusp4(locked) Female 13.8 20 25 5 10 25 25
MCUD33.1d M00650759 Dusp4/Dusp4(locked) Female 13.8 20 25 10 15 20 35
MCUD45.1c M00800779 Dusp4/Dusp4(locked) Male 14.1 25 45 20 20 25 35
MCUD47.1a M00828251 Dusp4/Dusp4(locked) Male 14.3 25 30 10 20 25 35
MCUD47.1b M00828252 Dusp4/Dusp4(locked) Male 14.3 25 35 10 15 30 25
Dusp4/Dusp4 Average 13.93 22.86 34.29 15 16.43 25 32.86
Dusp4/Dusp4 Standard Deviation 0.28 2.47 7.28 7.56 3.5 3.78 5.25
Dusp4/Dusp4 Standard Error 0.11 .94 2.75 2.86 1.32 1.43 1.98
Controls
Mouse Name Mouse Barcode Genotype Gender Age click 6kHz 12kHz 18kHz 24kHz 30kHz
MASL43.1e M00664331 +/+(locked) Female 13.9 20 40 15 20 25 35
MASL43.1g M00664333 +/+(locked) Female 13.9 25 40 20 20 25 35
MASL46.1f M00664353 +/+(locked) Female 13.9 20 55 35 30 35 40
MAYM37.1e M00649370 +/+(locked) Female 14.5 25 30 15 15 15 30
MAYM37.1f M00649371 +/+(locked) Female 14.5 20 35 5 15 20 30
MAYV44.3b M00798212 +/+(locked) Male 14.2 25 40 10 25 30 35
MAYV51.1a M00798274 +/+(locked) Male 14.2 20 40 15 25 25 30
MDCW43.3g M00829088 +/+(locked) Male 13.9 25 45 20 25 35 40
MDCW43.3h M00829089 +/+(locked) Male 13.9 25 30 20 20 30 35
+/+ Average 14.1 22.78 39.44 17.22 21.67 26.67 34.44
+/+ Standard Deviation 0.24 2.48 7.24 7.86 4.71 6.24 3.69
+/+ Standard Error 0.08 .83 2.41 2.62 1.57 2.08 1.23