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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Ear Hear. 2010 Jun;31(3):302–324. doi: 10.1097/AUD.0b013e3181cdb272

Table 4.

Methods for analyzing cABRs

Method Description Comment
TRANSIENT FEATURES
 peak latency and amplitude delineation of transient response
peaks
SUSTAINED FEATURES
 RMS amplitude global measure of magnitude used to calculate SNRs
 Fourier analysis frequency domain representation used to measure
precision and
magnitude of neural
phaselocking at specific
frequencies and
frequency ranges
amplitude and phase
are recorded
 Cross-Correlation compares the timing and
morphology of two signals

examples:
(1) stimulus-to-response
(2) response-to-response		 signal 1 is shifted in
time relative to signal 2
to find the shift that
produces the strongest
correlation
if the correlation
coefficient (r) = 1, the
signals are identical. If
r = 0, the signals are
completely dissimilar



 Autocorrelation


a signal is cross-correlated with
itself		 can be used to calculate
the time-displacement
between two signals
used to find (1)
repeating patterns in
signals such as
phaselocked activity to
the F0 and the
amplitude envelope (2)
strength of
phaselocking
 Sliding window analyses small time bins (i.e., windows) of
the signal are analyzed in
succession to create a three-
dimensional representation of the
response
(e.g. spectrograms and
autocorrelograms)		 used to evaluate and
visualize how cABRs
changes over time.