Table 4.
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. |