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CLINICAL GUIDANCE | SECTION ONE

SECTION 1 : PROGRAMMING PRINCIPLES

Getting started

At the initial activation, the clinician uses Custom Sound

™

to program the

sound processor so that the cochlear implant system delivers sound that is

audible and comfortable to the cochlear implant recipient. The streamlined

programming methods in Custom Sound help the clinician by simplifying the

programming procedure and reducing programming time. This section reviews

important basic programming deﬁnitions and describes the various streamlined

programming procedures.

Basic information about electrical stimulation and electrical

stimulation levels

• Electrode – a physical metal contact. The CI500 series, Freedom

™

, and

Nucleus

24 series cochlear implant types have 22 intracochlear electrodes

along the array and 2 extracochlear electrodes (ECE). The Nucleus

implants have 22 intra-cochlear electrodes and no extra cochlear electrodes.

• Channel – the combination of an active electrode and one or more

indifferent electrodes. For more information, see Stimulation Modes.

• Charge-balanced, biphasic current pulse – the electrical stimulus

delivered to the nerve, the negative and positive phases are equal so that

no net charge remains (see Figure 1). This form of stimulation is safe for

biological systems.

Figure 1: Current

amplitude and

pulse width

1 2 3 4 5 6 7 8 9 10 ... 77 78

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Cochlear SPrint Sound Processor Informazioni Techniche Pagina 5