Kv1 currents mediate a gradient of principal neuron excitability across the tonotopic axis in the rat lateral superior olive

European Journal of Neuroscience

Volumn 19, Issue 2, 2004, Pages 325-333

  Barnes Davies, Margaret ^a   Barker, Matthew C ^a   Osmani, Fatima ^a   Forsythe, Ian D ^a  

^a UNIVERSITY OF LEICESTER   (United Kingdom)

Author keywords

Binaural pathway; Interaural timing difference; Potassium current; Sound localization; Tonotopy

Indexed keywords

DENDROTOXIN;

ACTION POTENTIAL; ANIMAL TISSUE; ANTIBODY LABELING; ARTICLE; BINAURAL HEARING; BRAIN SLICE; CELL MEMBRANE CONDUCTANCE; CELL MEMBRANE RESISTANCE; CONTROLLED STUDY; HYPERPOLARIZATION; LATERAL SUPERIOR OLIVE; MEMBRANE CURRENT; NERVE CELL EXCITABILITY; NERVE FIBER MEMBRANE CONDUCTANCE; NONHUMAN; OLIVARY NUCLEUS; PATCH CLAMP; POTASSIUM CURRENT; PRIORITY JOURNAL; RAT; STATISTICAL SIGNIFICANCE; TONOTOPY; VOLTAGE CLAMP;

ACTION POTENTIALS; ANIMALS; ANIMALS, NEWBORN; CELL COUNT; ELAPID VENOMS; KV1.1 POTASSIUM CHANNEL; MEMBRANE POTENTIALS; NEURONS; OLIVARY NUCLEUS; POTASSIUM CHANNELS; POTASSIUM CHANNELS, VOLTAGE-GATED; RATS;

EID: 0842265632     PISSN: 0953816X     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.0953-816X.2003.03133.x     Document Type: Article

References (48)

1. Adam, T.J., Schwarz, D.W. & Finlayson, P.G. (1999) Firing properties of chopper and delay neurons in the lateral superior olive of the rat. Exp. Brain Res., 124, 489-502.
2. Adam, T.J., Finlayson, P.G. & Schwarz, D.W. (2001) Membrane properties of principal neurons of the lateral superior olive. J. Neurophysiol., 86, 922-934.
3. h) in octopus cells of the mammalian cochlear nucleus. J. Neurophysiol., 84, 806-817.
4. Bal, R. & Oertel, D. (2001) Potassium currents in octopus cells of the mammalian cochlear nucleus. J. Neurophysiol., 86, 2299-2311.
5. h) in neurons of the medial nucleus of the trapezoid body: voltage-clamp analysis and enhancement by norepinephrine and cAMP suggest a modulatory mechanism in the auditory brain stem. J. Neurophysiol., 70, 1420-1432.
6. Barnes-Davies, M. & Forsythe, I.D. (1995) Pre- and postsynaptic glutamate receptors at a giant excitatory synapse in rat auditory brainstem slices. J. Physiol. (Lond.), 488, 387-406.
7. Boudreau, J.C. & Tsuchitani, C. (1968) Binaural interaction in the cat superior olive S segment. J. Neurophysiol., 31, 442-454.
8. + conductances with complementary functions in postsynaptic integration at a central auditory synapse. J. Neurosci., 15, 8011-8022.
9. Brew, H.M. & Forsythe, I.D. (1996) Neurones in two auditory nuclei of rat brainstem exhibit distinct electrophysiological properties. J. Physiol. (Lond.), 495, 57P.
10. Brew, H.M., Hallows, J.L. & Tempel, B.L. (2003) Hyperexcitability and reduced low threshold potassium currents in auditory neurons of mice lacking the channel subunit Kv1.1. J. Physiol. (Lond.), 548, 1-20.
11. Caird, D. & Klinke, R. (1983) Processing of binaural stimuli by cat superior olivary complex neurons. Exp. Brain Res., 52, 385-399.
12. Cant, N.B. & Casseday, J.H. (1986) Projections from the anteroventral cochlear nucleus to the lateral and medial superior olivary nuclei. J. Comp. Neurol., 247, 457-476.
13. h) in primary auditory neurons. Hear. Res., 110, 179-190.
14. Clopton, B.M. & Winfield, J.A. (1973) Tonotopic organization in the inferior colliculus of the rat. Brain Res., 56, 355-358.
15. h) at an excitatory synaptic terminal in the rat auditory brainstem. J. Physiol. (Lond.), 534, 733-744.
16. Dodson, P.D., Barker, M.C. & Forsythe, I.D. (2002) Two heteromeric Kv1 potassium channels differentially regulate action potential firing. J. Neurosci., 22, 6953-6961.
17. Dodson, P.D., Billups, B., Rusznak, Z., Szucs, G., Barker, M.C. & Forsythe, I.D. (2003) Presynaptic Kv1.2 channels suppress synaptic terminal hyperexcitability following action potential invasion. J. Physiol. (Lond.), 550, 27-33.
18. Finlayson, P.G. & Caspary, D.M. (1989) Synaptic potentials of chinchilla lateral superior olivary neurons. Hear. Res., 38, 221-228.
19. Fujino, K., Koyano, K. & Ohmori, H. (1997) Lateral and medial olivocochlear neurons have distinct electrophysiological properties in the rat brain slice. J. Neurophysiol., 77, 2788-2804.
20. Glendenning, K.K. & Masterton, R.B. (1983) Acoustic chiasm: efferent projections of the lateral superior olive. J. Neurosci., 3, 1521-1537.
21. Glendenning, K.K., Brunso-Bechtold, J.K., Thompson, G.C. & Masterton, R.B. (1981) Ascending auditory afferents of the lateral lemniscus. J. Comp. Neurol., 197, 673-703.
22. Glendenning, K.K., Hutson, K.A., Nudo, R.J. & Masterton, R.B. (1985) Acoustic chiasm II: Anatomical basis of binaurality in lateral superior olive of cat. J Comp. Neurol., 232, 261-285.
23. Glendenning, K.K., Baker, B.N., Hutson, K.A. & Masterton, R.B. (1992) Acoustic chiasm V: inhibition and excitation in the ipsilateral and contralateral projections of LSO. J. Comp. Neurol., 319, 100-122.
24. Guinan, JJ. Jr, Norris, B.E. & Guinan, S.S. (1972) Single auditory units in the superior olivary complex II: Locations of unit categories and tonotopic organization. Int. J. Neurosci., 4, 147-166.
25. Helfert, R.H. & Schwartz, I.R. (1986) Morphological evidence for the existence of multiple neuronal classes in the cat lateral superior olivary nucleus. J. Comp. Neurol., 244, 533-549.
26. Helfert, R.H. & Schwartz, I.R. (1987) Morphological features of five neuronal classes in the gerbil lateral superior olive. Am. J. Anat., 179, 55-69.
27. Hooper, S.L., Buchman, E. & Hobbs, K.H. (2002) A computational role for slow conductances: single-neuron models that measure duration. Nat. Neurosci., 5, 552-556.
28. Irvine, D.R., Park, V.N. & McCormick, L. (2001) Mechanisms underlying the sensitivity of neurons in the lateral superior olive to interaural intensity differences. J. Neurophysiol., 86, 2647-2666.
29. Isope, P. & Barbour, B. (2002) Properties of unitary granule cell → Purkinje cell synapses in adult rat cerebellar slices. J. Neurosci., 22, 9668-9678.
30. Kandler, K. & Friauf, E. (1995a) Development of glycinergic and glutamatergic synaptic transmission in the auditory brainstem of perinatal rats. J. Neurosci., 15, 6890-6904.
31. Kandler, K. & Friauf, E. (1995b) Development of electrical membrane properties and discharge characteristics of superior olivary complex neurons in fetal and postnatal rats. Eur. J. Neurosci., 1, 1773-1790.
32. Kelly, J.B., Liscum, A., van Adel, B. & Ito, M. (1998) Projections from the superior olive and lateral lemniscus to tonotopic regions of the rat's inferior colliculus. Hear. Res., 116, 43-54.
33. Manis, P.B. & Marx, S.O. (1991) Outward currents in isolated ventral cochlear nucleus neurons. J. Neurosci., 11, 2865-2880.
34. + currents contribute to accommodation in murine spiral ganglion neurons. J. Physiol. (Lond.), 542, 763-778.
35. Oertel, D. (1997) Encoding of timing in the brain stem auditory nuclei of vertebrates. Neuron, 19, 959-962.
36. Oertel, D., Bal, R., Gardner, S.M., Smith, P.M. & Joris, P.X. (2000) Detection of synchrony in the activity of auditory nerve fibers by octopus cells of the mammalian cochlear nucleus. Proc. Natl Acad. Sci. U.S.A., 97, 11 773-11 779.
37. Park, T.J., Monsivais, P. & Pollak, G.D. (1997) Processing of interaural intensity differences in the LSO: role of interaural threshold differences. J. Neurophysiol., 77, 2863-2878.
38. Rietzel, H.J. & Friauf, E. (1998) Neuron types in the rat lateral superior olive and developmental changes in the complexity of their dendritic arbors. J. Comp. Neurol., 390, 20-40.
39. Rothman, J.S. & Manis, R.B. (2003a) The roles potassium currents play in regulating the electrical activity of ventral cochlear nucleus neurons. J. Neurophysiol., 89, 3097-3113.
40. Rothman, J.S. & Manis, RB. (2003b) Differential expression of three distinct potassium currents in the ventral cochlear nucleus. J. Neurophysiol., 89, 3070-3082.
41. Sanes, D.H. (1990) An in vitro analysis of sound localization mechanisms in the gerbil lateral superior olive. J. Neurosci., 10, 3494-3506.
42. Sanes, D.H. & Friauf, E. (2000) Development and influence of inhibition in the lateral superior olivary nucleus. Hear. Res., 147, 46-58.
43. Shneiderman, A. & Henkel, C.K. (1987) Banding of lateral superior olivary nucleus afferents in the inferior colliculus: a possible substrate for sensory integration. J. Comp. Neurol., 266, 519-534.
44. Smith, P.H., Joris, P.X. & Yin, T.C. (1993) Projections of physiologically characterized spherical bushy cell axons from the cochlear nucleus of the cat: evidence for delay lines to the medial superior olive. J. Comp. Neurol., 331, 245-260.
45. Svirskis, G., Kotak, V., Sanes, D.H. & Rinzel, J. (2002) Enhancement of signal-to-noise ratio and phase locking for small inputs by a low-threshold outward current in auditory neurons. J. Neurosci., 22, 11 019-11 025.
46. Tollin, D.J. (2003) The lateral superior olive: a functional role in sound source localization. Neuroscientist, 9, 127-143.
47. Tsuchitani, C. (1977) Functional organization of lateral cell groups of cat superior olivary complex. J. Neurophysiol., 40, 296-318.
48. Tsuchitani, C. (1988) The inhibition of cat lateral superior olive unit excitatory responses to binaural tone bursts. I. The transient chopper response. J. Neurophysiol., 59, 164-183.