Tone ABRs
Tone pips are typically presented at multiple frequencies to
target more speci
fi
c areas of the subject's hearing range. Tone
ABRs take signi
fi
cantly longer to perform (typically up to
around 40 minutes) but provide more data.
Out-of-the-Box Experiments
When the software is installed, out-of-box experiment
fi
les for both types of ABRs are stored at:
C:\TDT\BioSigRZ\Configs\ABR
. The default values used in the pre-con
fi
gured experiments
are set to values suited to typical experiments. Your protocol or circumstance may differ from
these values but these will work as an example or a starting point in most cases.
To open the ABR experiment con
fi
guration:
Launch
BioSigRZ
.
Click the File menu and click
Open Con
fi
g. File
.
Browse to and open one of the following
fi
les:
C:\TDT\BioSigRZ\Configs\ABR\Root_ClickAbr.acf
A 0.1 millisecond, single-channel mono-phasic click will be presented at a rate of 21
presentations per second. With each successive presentation, the click phase will alternate
between a condensation and rarefaction click to eliminate potential speaker artifacts. Click
1.
2.
3.
BioSigRZ Software | 22
