Encoding of acoustic directional information by saccular afferents of the sleeper goby, Dormitator latifrons

Zhongmin Lu, J. Song, A. N. Popper

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

This paper reports on directional response properties of saccular afferents of the sleeper goby, Dormitator latifrons, to 100-Hz acoustic particle motions with a focus on testing the hypothesis that the response directionality of a fish's auditory afferents derives from the morphological polarity of sensory hair cells in the otolithic organs. Spontaneous rates (SR) and best sensitivities (BS) of saccular afferents ranged from 0 to 162 spikes/see and from 0.2- to 100-nm RMS displacement. SR did not vary with BS. Most saccular afferents were phase-locked to sinusoidal stimulation and had sustained temporal response patterns with some adaptation. All saccular afferents were directionally sensitive to the stimulus, and the sharpness of directional response curves was determined by a directionality index (DI). The DI ranged from 0.64 to 1.50 (mean= 1.02, SE = 0.02, n = 100) and gradually decreased with stimulus level throughout afferents' response dynamic range. Many afferents had approximately symmetric directional response curves relative to their best response axes (BRA). BRA of most afferents remained constant with stimulus level. The BRA distribution had a peak along an axis that correlates closely with the morphological polarity of saccular hair cells. Therefore, our results strongly support the hypothesis.

Original languageEnglish
Pages (from-to)805-815
Number of pages11
JournalJournal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology
Volume182
Issue number6
DOIs
StatePublished - Jun 1 1998
Externally publishedYes

Fingerprint

hair
Acoustics
hairs
acoustics
particle motion
dynamic response
Fishes
cells
fish
testing
index
rate
Dormitator latifrons
distribution
organ

Keywords

  • Ear
  • Eighth nerve
  • Fish
  • Hearing
  • Sound localization

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Physiology
  • Physiology (medical)
  • Behavioral Neuroscience
  • Neuroscience(all)

Cite this

@article{c6451fccbd664657856a9d2aa69b7338,
title = "Encoding of acoustic directional information by saccular afferents of the sleeper goby, Dormitator latifrons",
abstract = "This paper reports on directional response properties of saccular afferents of the sleeper goby, Dormitator latifrons, to 100-Hz acoustic particle motions with a focus on testing the hypothesis that the response directionality of a fish's auditory afferents derives from the morphological polarity of sensory hair cells in the otolithic organs. Spontaneous rates (SR) and best sensitivities (BS) of saccular afferents ranged from 0 to 162 spikes/see and from 0.2- to 100-nm RMS displacement. SR did not vary with BS. Most saccular afferents were phase-locked to sinusoidal stimulation and had sustained temporal response patterns with some adaptation. All saccular afferents were directionally sensitive to the stimulus, and the sharpness of directional response curves was determined by a directionality index (DI). The DI ranged from 0.64 to 1.50 (mean= 1.02, SE = 0.02, n = 100) and gradually decreased with stimulus level throughout afferents' response dynamic range. Many afferents had approximately symmetric directional response curves relative to their best response axes (BRA). BRA of most afferents remained constant with stimulus level. The BRA distribution had a peak along an axis that correlates closely with the morphological polarity of saccular hair cells. Therefore, our results strongly support the hypothesis.",
keywords = "Ear, Eighth nerve, Fish, Hearing, Sound localization",
author = "Zhongmin Lu and J. Song and Popper, {A. N.}",
year = "1998",
month = "6",
day = "1",
doi = "10.1007/s003590050225",
language = "English",
volume = "182",
pages = "805--815",
journal = "Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology",
issn = "0340-7594",
publisher = "Springer Verlag",
number = "6",

}

TY - JOUR

T1 - Encoding of acoustic directional information by saccular afferents of the sleeper goby, Dormitator latifrons

AU - Lu, Zhongmin

AU - Song, J.

AU - Popper, A. N.

PY - 1998/6/1

Y1 - 1998/6/1

N2 - This paper reports on directional response properties of saccular afferents of the sleeper goby, Dormitator latifrons, to 100-Hz acoustic particle motions with a focus on testing the hypothesis that the response directionality of a fish's auditory afferents derives from the morphological polarity of sensory hair cells in the otolithic organs. Spontaneous rates (SR) and best sensitivities (BS) of saccular afferents ranged from 0 to 162 spikes/see and from 0.2- to 100-nm RMS displacement. SR did not vary with BS. Most saccular afferents were phase-locked to sinusoidal stimulation and had sustained temporal response patterns with some adaptation. All saccular afferents were directionally sensitive to the stimulus, and the sharpness of directional response curves was determined by a directionality index (DI). The DI ranged from 0.64 to 1.50 (mean= 1.02, SE = 0.02, n = 100) and gradually decreased with stimulus level throughout afferents' response dynamic range. Many afferents had approximately symmetric directional response curves relative to their best response axes (BRA). BRA of most afferents remained constant with stimulus level. The BRA distribution had a peak along an axis that correlates closely with the morphological polarity of saccular hair cells. Therefore, our results strongly support the hypothesis.

AB - This paper reports on directional response properties of saccular afferents of the sleeper goby, Dormitator latifrons, to 100-Hz acoustic particle motions with a focus on testing the hypothesis that the response directionality of a fish's auditory afferents derives from the morphological polarity of sensory hair cells in the otolithic organs. Spontaneous rates (SR) and best sensitivities (BS) of saccular afferents ranged from 0 to 162 spikes/see and from 0.2- to 100-nm RMS displacement. SR did not vary with BS. Most saccular afferents were phase-locked to sinusoidal stimulation and had sustained temporal response patterns with some adaptation. All saccular afferents were directionally sensitive to the stimulus, and the sharpness of directional response curves was determined by a directionality index (DI). The DI ranged from 0.64 to 1.50 (mean= 1.02, SE = 0.02, n = 100) and gradually decreased with stimulus level throughout afferents' response dynamic range. Many afferents had approximately symmetric directional response curves relative to their best response axes (BRA). BRA of most afferents remained constant with stimulus level. The BRA distribution had a peak along an axis that correlates closely with the morphological polarity of saccular hair cells. Therefore, our results strongly support the hypothesis.

KW - Ear

KW - Eighth nerve

KW - Fish

KW - Hearing

KW - Sound localization

UR - http://www.scopus.com/inward/record.url?scp=0032102290&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032102290&partnerID=8YFLogxK

U2 - 10.1007/s003590050225

DO - 10.1007/s003590050225

M3 - Article

C2 - 9631556

AN - SCOPUS:0032102290

VL - 182

SP - 805

EP - 815

JO - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology

JF - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology

SN - 0340-7594

IS - 6

ER -