Speech perception in noise

Question 1

Channels needed for speech in noise

Answer 1

Greater than 7 dont make a difference, with the excption of SPEAK

Question 2

Localization in reverberation

Answer 2

ITDs
-Envelop of the signal
-used for localizing LF
ILD:
HF

CI users use ILDs

Forward masking
precedent effect
steep on and off sets vs. ongoing signals

Question 3

Tripolar stim

Answer 3

2 reference electrodes and one stemming
2 intracochlear ajcent electordes. by keeping current in cochlea, voltage is steeper and leads to more focused neural excitation. –> compliance issues because cant reach needed amplitudes for adequate loudness/