Binaural cue methods agree on electrode mismatch while pitch matching does not

Evidence

(2) Both BIC and IPTD based pairing results indicate a large 2–3 electrode mismatch for some subjects. There is clear correlation between the mismatches indicated by these two methods. (3) In line with Poon et al. ( 2009 ) there is no correlation between the pitch matched pairs and the IPTD matched pair and in line with He et al. ( 2012 ) there is no correlation between the pitch matched pairs and the BIC matched pair. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1470

Categorization

Category: Factual Claims

• XREF: Converges with the reader’s core theme: physiological (BIC) and behavioral (IPTD) binaural measures track each other but diverge from place-pitch, revealing separable auditory coding streams.
• QUESTION: If BIC and IPTD agree on the mismatch, what does the pitch map actually encode physiologically that differs from binaural-timing neurons?

Related

• Physiological and behavioral binaural measures agree with each other but not with pitch matching. (similarity 0.91)
• Pitch-matched electrode pairs do not maximize binaural time-difference sensitivity (similarity 0.90)
• Physiological and temporal-precision pairing measures agree while pitch matching does not (similarity 0.89)
• Pitch-matching and binaural-cue methods yield uncorrelated electrode pairings in implant patients (similarity 0.87)
• Binaural brainstem responses are disrupted by large electrode place mismatches (similarity 0.86)
• Binaural interaction components show statistically significant electrode tuning in humans (similarity 0.84)
• BIC amplitude does not correlate with interaural pitch comparison outcomes. (similarity 0.83)
• Three electrode-pairing methods give inconsistent results across individual implant users (similarity 0.83)
• Interaural time difference thresholds stay flat until 3–6 mm of electrode mismatch (similarity 0.82)
• BIC-based electrode pairing is validated against psychoacoustic pitch and timing measures (similarity 0.82)
• Pitch-based electrode matching in cochlear implants is confounded by acclimatization and brain plasticity (similarity 0.82)
• Interaural place-of-stimulation mismatch shrinks the binaural interaction component’s magnitude. (similarity 0.81)
• Binaural brainstem neurons compare only interaurally place-matched inputs. (similarity 0.80)
• Larger BIC amplitude signals place-matched electrodes only when neural survival is equal across ears (similarity 0.80)
• Brain plasticity can make pitch-matching data misleadingly good in CI users (similarity 0.79)