Document Detail

Sound production evoked by electrical stimulation of the forebrain in the oyster toadfish.
MedLine Citation:
PMID:  8145189     Owner:  NLM     Status:  MEDLINE    
In mammals, birds and amphibians the neural pathways controlling sound production descend from higher centers in the forebrain, whereas in fishes only brainstem and spinal centers have been explicitly implicated in sound production. We now report that electrical stimulation of the forebrain of the oyster toadfish (Opsanus tau) readily evokes both the agonistic grunt and the courtship boatwhistle. Boatwhistles are more realistic than ones previously evoked from lower centers. Positive stimulation sites are localized in the preoptic area (nucleus preopticus parvocellularis anterior) and the supra-commissural nucleus of the ventral telencephalon, a likely homologue of the amygdala. Both sites contain gonadal steroid-concentrating neurons and play a central role in fish courtship behavior. Evoked sounds form a continuum from knock grunts, burst grunts, transition boatwhistles to complete boatwhistles; sound pressure level (SPL), fundamental frequency and duration increase consistently within the continuum. For all sound types, SPLs exhibit the smallest variation (coefficients of variation of 2.7 to 5.7%), fundamental frequency is intermediate (5 to 13%) and durations vary most widely (18 to 60%). Boatwhistles, with the smallest variation and greatest amplitude, are likely generated by a maximal output of the CNS and sonic muscles. Grunt SPLs however, vary over a range of 26 dB for all fish and by as much as 18 dB in an individual; suggesting recruitment of variable numbers of motor units despite electrical coupling within the sonic motor nucleus.
M L Fine; M A Perini
Related Documents :
25405939 - Functional local input to layer 5 pyramidal neurons in the rat visual cortex.
17608799 - Representation of harmonic frequencies in auditory memory: a mismatch negativity study.
8910139 - Electrophysiological evidence of a sound localizing binaural subsystem in the human aud...
12853959 - Topography and synaptic shaping of direction selectivity in primary auditory cortex.
7982089 - Pulse repetition rate increases the minimum threshold and latency of auditory neurons.
21151809 - Non-invasive brain stimulation: enhancing motor and cognitive functions in healthy old ...
17928559 - Responses to social vocalizations in the inferior colliculus of the mustached bat are i...
23549789 - Microtubule motors mediate endosomal sorting by maintaining functional domain organizat...
23201179 - Aggression- and sex-induced neural activity across vasotocin populations in the brown a...
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of comparative physiology. A, Sensory, neural, and behavioral physiology     Volume:  174     ISSN:  -     ISO Abbreviation:  J. Comp. Physiol. A     Publication Date:  1994 Feb 
Date Detail:
Created Date:  1994-04-29     Completed Date:  1994-04-29     Revised Date:  2014-07-21    
Medline Journal Info:
Nlm Unique ID:  8413199     Medline TA:  J Comp Physiol A     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  173-85     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Electric Stimulation
Fishes / physiology*
Preoptic Area / anatomy & histology,  physiology
Prosencephalon / anatomy & histology,  physiology*
Sexual Behavior, Animal / physiology
Telencephalon / anatomy & histology,  physiology
Vocalization, Animal / physiology*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Encoding of phase spectra by the peripheral auditory system of the bullfrog.
Next Document:  Effects of scaphognathite nerve stimulation on the acutely deafferented crab ventilatory central pat...