Too few channels were deactivated to demonstrate any speech benefit

Evidence

There was a range in the number of channels selected for deactivation (1–6; median = four channels), which, when combined with the electrodes already switched off, resulted in a de-activation range of 1–10 (median = six channels). For an n-of-m strategy this number of deactivated electrodes may have been too small to demonstrate differences in performance; the selection of channels to deactivate was based purely on electrodes that were indiscriminable from one another in pitch ranking and for many users the number of indiscriminable electrode pairs was low so only small numbers were deactivated. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2110 (#corroborates, via linked claim)

Categorization

Category: Causal Relationships

Related

• Deactivating too few channels fails to show performance differences in n-of-m CI strategies (similarity 0.94)
• Deactivating discriminable electrodes controls whether benefit comes from channel count or pitch quality (similarity 0.88)
• Deactivating pitch-indiscriminable cochlear implant electrodes yields no speech benefit (similarity 0.88)
• Electrode deactivation outcomes depend on stimulation rate and filter allocation differences (similarity 0.87)
• Pitch-ranking-based electrode deactivation provides no measurable benefit for ACE implant users. (similarity 0.87)
• Electrode deactivation reallocates frequencies and can harm rather than help (similarity 0.86)
• Electrode deactivation worsens spectral resolution despite unchanged stimulation rate (similarity 0.86)
• N-of-m cochlear processing strategies resist benefit from electrode deactivation (similarity 0.86)
• N-of-m device users benefit less because not all channels fire each cycle (similarity 0.86)
• Deactivating an electrode shifts frequency-to-electrode allocation and can negate expected benefits. (similarity 0.85)
• Electrode deactivation benefits depend on the sound processing strategy used. (similarity 0.85)
• Cochlear device users benefit less from electrode deactivation than AB and MEDEL users (similarity 0.85)
• Pitch-based electrode deactivation provides no speech benefit for ACE users (similarity 0.84)
• Deactivating electrodes can shift frequency-to-electrode mapping and worsen perception (similarity 0.84)
• N-of-m stimulation strategies resist improvement from electrode deactivation. (similarity 0.84)

Broader Connections

• Deactivating too few channels fails to show performance differences in n-of-m CI strategies #corroborates (0.92) — Dijk, Pim van, Physiology, Psychoacoustics and…, 2110