scholarly journals Auditory evoked potentials of the plainfin midshipman fish (Porichthys notatus): implications for directional hearing

2019 ◽  
Vol 222 (15) ◽  
pp. jeb198655
Author(s):  
Andrew D. Brown ◽  
Ruiyu Zeng ◽  
Joseph A. Sisneros
Keyword(s):  
Evoked Potentials ◽  
Auditory Evoked Potentials ◽  
Directional Hearing ◽  
Porichthys Notatus ◽  
Plainfin Midshipman

scholarly journals Auditory evoked potentials of utricular hair cells in the plainfin midshipman, Porichthys notatus

2020 ◽  
Vol 223 (17) ◽  
pp. jeb226464
Author(s):  
Loranzie S. Rogers ◽  
Joseph A. Sisneros
Keyword(s):  
Evoked Potentials ◽  
Hair Cells ◽  
Auditory Evoked Potentials ◽  
High Gain ◽  
Type I ◽  
Acoustic Stimuli ◽  
Porichthys Notatus ◽  
Socially Relevant ◽  
And Function ◽  
Plainfin Midshipman

ABSTRACTThe plainfin midshipman, Porichthys notatus, is a soniferous marine teleost fish that generates acoustic signals for intraspecific social communication. Nocturnally active males and females rely on their auditory sense to detect and locate vocally active conspecifics during social behaviors. Previous work showed that the midshipman inner ear saccule and lagena are highly adapted to detect and encode socially relevant acoustic stimuli, but the auditory sensitivity and function of the midshipman utricle remain largely unknown. Here, we characterized the auditory evoked potentials from hair cells in the utricle of non-reproductive type I males and tested the hypothesis that the midshipman utricle is sensitive to behaviorally relevant acoustic stimuli. Hair cell potentials were recorded from the rostral, medial and caudal regions of the utricle in response to pure tone stimuli presented by an underwater speaker. We show that the utricle is highly sensitive to particle motion stimuli produced by an underwater speaker positioned in the horizontal plane. Utricular potentials were recorded across a broad range of frequencies with lowest particle acceleration (dB re. 1 m s−2) thresholds occurring at 105 Hz (lowest frequency tested; mean threshold −32 dB re. 1 m s−2) and highest thresholds at 605–1005 Hz (mean threshold range −5 to −4 dB re. 1 m s−2). The high gain and broadband frequency sensitivity of the utricle suggest that it likely serves a primary auditory function and is well suited to detect conspecific vocalizations including broadband agonistic signals and the multiharmonic advertisement calls produced by reproductive type I males.

Auditory Evoked Potentials

1991 ◽  
Vol 24 (2) ◽  
pp. 349-370 ◽  
Author(s):  
Roger A. Ruth ◽  
Paul R. Lambert
Keyword(s):  
Evoked Potentials ◽  
Auditory Evoked Potentials
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