Biomaterial Database

Mechanisms for directional hearing in the sea catfish (Arius felis). 1977

W N Tavolga

The marine catfish (Arius felis) uses directional hearing for the acoustical detection of obstacles, and is primarily dependent on the vector components of near-field acoustics. Directional sound, detected as lateral line action potentials, produces the strongest response on the side toward the stimulus. Responses are maximal in the 50-150 Hz range. The swim bladder is asymmetrical as a sound generator (7 dB front-to-back ratio). As a sound receiver, the swim bladder is even more directional (24 dB front-to-back ratio at 100 Hz). It is concluded that directional response to sound in fishes can involve the interaction of at least two mechanisms, in this case the lateral line and the swim bladder.

UI	MeSH Term	Description	Entries
D009949	Orientation	Awareness of oneself in relation to time, place and person.	Cognitive Orientation,Mental Orientation,Psychological Orientation,Cognitive Orientations,Mental Orientations,Orientation, Cognitive,Orientation, Mental,Orientation, Psychological,Orientations,Orientations, Cognitive,Orientations, Mental,Orientations, Psychological,Psychological Orientations
D004455	Echolocation	An auditory orientation mechanism involving the emission of high frequency sounds which are reflected back to the emitter (animal).	Echolocations
D005399	Fishes	A group of cold-blooded, aquatic vertebrates having gills, fins, a cartilaginous or bony endoskeleton, and elongated bodies covered with scales.
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001306	Auditory Pathways	NEURAL PATHWAYS and connections within the CENTRAL NERVOUS SYSTEM, beginning at the hair cells of the ORGAN OF CORTI, continuing along the eighth cranial nerve, and terminating at the AUDITORY CORTEX.	Auditory Pathway,Pathway, Auditory,Pathways, Auditory
D012623	Seawater	The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.	Sea Water,Sea Waters,Seawaters,Water, Sea,Waters, Sea
D014828	Vocalization, Animal	Sounds used in animal communication.	Singing, Animal,Sound Communication, Animal,Vocal Communication, Animal,Animal Singing,Animal Singings,Animal Sound Communication,Animal Sound Communications,Animal Vocal Communication,Animal Vocal Communications,Animal Vocalization,Animal Vocalizations,Communication, Animal Sound,Communication, Animal Vocal,Communications, Animal Sound,Communications, Animal Vocal,Singings, Animal,Sound Communications, Animal,Vocal Communications, Animal,Vocalizations, Animal