TABLE 1. Distribution of vestibular nerve branch-evoked monosynaptic inputs in phasic and tonic second-order vestibular neurons
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Neurons |
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2°AC | 2°HC | 2°PC | 2°LA | 2°UT | 2°LA+Canal | 2°UT+Canal | 2°Mult. Canal | 2°Mult. Canal+Macula | Total | ||||||||||
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Phasic 2°VN | 48 (25) | 36 (19) | 57 (29) | 9 (5) | 4 (2) | 15 (8) | 8 (4) | 15 (7) | 2 (1) | 194 (100) | |||||||||
Tonic 2°VN | 15 (27) | 7 (13) | 14 (26) | 3 (5) | 2 (4) | 9 (16) | 3 (5) | 2 (4) | 0 (0) | 55 (100) | |||||||||
All 2°VN | 63 (25) | 43 (17) | 71 (29) | 12 (5) | 6 (2) | 24 (10) | 11 (4) | 17 (7) | 2 (1) | 249 (100) |
Recorded neurons (n = 249) were classified as phasic (n = 194) or tonic (n = 55) second-order vestibular neurons (2°VN) and were subdivided, according to the presence of monosynaptic inputs after
electrical stimulation of particular labyrinthine nerve branche(s). Number of neurons in bold; number in parenthesis indicates
percentage of this type with respect to phasic, tonic or all recorded 2°VN, respectively. AC, anterior vertical canal, HC,
horizontal canal, LA, lagena, PC, posterior vertical canal, UT, utricle.