Subjects’ Demographic and Audiometric Characteristics
| Subject | Age at scanning (y) | Sex | Impaired side | Visually read asymmetry of metabolism on PET | Etiology of AHL | Duration of deafness (y) | Bone conduction PTA4 (dB HL) | Air conduction PTA4 (dB HL) | Monosyllabic word recognition at 65 dB SPL (%) | Brain stem evoked response audiometry (worse ear) | Electrocochleography (worse ear) | ||||||
| IC | PAC | Better ear | Worse ear | Better ear | Worse ear | Better ear | Worse ear | Threshold (dB) | Interpeak latency (ms) | Sum action potential (ms) | Cochlear microphonic (dB HL) | ||||||
| 1 | 35.9 | M | R | Rightward, moderate | Rightward, moderate | Sudden hearing loss | 1.5 | 2.50 | 95 | 6.25 | >130 | 100 | 0 | 90 | 4.3 | / | / |
| 2 | 47.8 | M | R | Rightward, moderate | Rightward, mild | Mumps | 45 | 7.50 | >130 | 16.25 | >130 | 100 | 0 | / | / | n/d | 70 |
| 3 | 40.9 | M | R | Rightward, strong | Rightward, strong | Fracture of right petrous bone | 2.1 | 3.75 | >130 | 7.5 | >130 | 100 | 0 | / | / | n/d | 100 |
| 4 | 52.4 | M | L | Leftward, strong | Leftward, mild | Intracochlear schwannoma | 12 | 15 | >130 | 15 | >130 | 100 | 0 | / | / | n/d | 100 |
| 5 | 75.8 | M | R | Rightward, strong | Rightward, mild | Sudden hearing loss | 0.7 | 20 | >130 | 38.75 | >130 | 80 | 0 | / | / | n/d | 90 |
| 6 | 55.8 | F | L | Leftward, moderate | Leftward, moderate | Sudden hearing loss | 0.8 | 6.25 | >130 | 11.25 | >130 | 100 | 0 | n/d | n/d | 0.1 | 90 |
| 7 | 42.4 | M | R | Rightward, moderate | Leftward, mild | Mumps | 34 | 0 | 53.75 | 2.5 | 113.75 | 100 | 0 | / | / | n/d | 110 |
| 8 | 40.0 | F | L | No asymmetry | Leftward, mild | Unknown | 31 | 32.5 | >130 | 36.25 | >130 | 90 | 0 | / | / | n/d | 100 |
| 9 | 60.1 | M | R | Leftward, mild | Rightward, mild | Sudden hearing loss | 21 | 41.25 | 113.75 | 43.75 | 113.75 | 70 | 0 | / | / | n/d | 100 |
| 10 | 58.0 | M | L | Leftward, mild | Rightward, mild | Mumps | 53 | 25 | >130 | 42.5 | >130 | 45 | 0 | / | / | n/d | 100 |
| 11 | 84.2 | M | L | Leftward, strong | Leftward, mild | Sudden hearing loss | 0.5 | 35 | >130 | 40 | >130 | 70 | 0 | / | / | n/d | 90 |
| 12 | 55.5 | F | R | No asymmetry | No asymmetry | Pertussis | 48 | 35 | >130 | 40 | >130 | 45 | 0 | / | / | / | / |
| 13 | 17.9 | F | L | Leftward, strong | Leftward, mild | Large aquaeductus vestibuli syndrome | 15 | 12.5 | >130 | 17.5 | >130 | 100 | 0 | / | / | n/d | 100 |
HL = hearing loss; SPL = sound pressure level; PTA4 = pure tone average at frequencies 0.5, 1, 2, and 4 kHz; n/d = not derivable.
Slash indicates that test was not administered.