Eclipse Additional Information Page 73
3.15 eABR – Trigger Enabled (if included in your license)
The Electrical Auditory Brainstem Response (eABR) is a measurement of the ABR using an electrical stimu-
lus. The purpose of the test is to determine if the auditory nerve responds as expected to electrical stimula-
tion. The stimulus to elicit the response comes from an external cochlear implant stimulator not supplied with
the EP25 system. The cochlear implant system also determines the stimulus and level. The test is used to
evaluate electrical threshold while stimulating with a Cochlear Implant, the result is typically used to ensure
brainstem activity and determine how to set the cochlear implant levels.
3.15.1 Protocol Settings for eABR
A special auto protocol setup of the EP25 system has been made that will set the measuring range typically
used for this type of measurements as shown below.
eABR Protocol
External Trigger: Active – Triggered by Cochlear implant system
Transducer: Not used
Stimulus: Elicited by Cochlear implant system
Masking offset: Not used
Repetition Rate: Controlled by Cochlear implant Stimulus System
Polarity: Not used
Filters: 1–5kHz or 3kHz
Time base: 0-15ms or 0-30ms
Disable rejection: Enabled
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