Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
SENSITIVITY OF CENTRAL UNITS IN THE GOLDFISH, CARASSIUS-AURATUS, TO TRANSIENT HYDRODYNAMIC STIMULI
Autore:
MOGDANS J; BLECKMANN H; MENGER N;
Indirizzi:
UNIV BONN,INST ZOOL,POPPELSDORFER SCHLOSS D-53115 BONN GERMANY
Titolo Testata:
Brain, behavior and evolution
fascicolo: 5, volume: 50, anno: 1997,
pagine: 261 - 283
SICI:
0006-8977(1997)50:5<261:SOCUIT>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
LATERAL-LINE SYSTEM; TOPMINNOW APLOCHEILUS-LINEATUS; FISH ANOPTICHTHYS-JORDANI; SAROTHERODON-NILOTICUS L; XENOPUS-LAEVIS; FREQUENCY-RESPONSE; THORNBACK RAY; MORPHOLOGY; ORGANIZATION; PROJECTIONS;
Keywords:
LATERAL LINE; MECHANORECEPTION; WATER MOVEMENTS; MEDULLA; TELEOST FISH; CYPRINIDAE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
56
Recensione:
Indirizzi per estratti:
Citazione:
J. Mogdans et al., "SENSITIVITY OF CENTRAL UNITS IN THE GOLDFISH, CARASSIUS-AURATUS, TO TRANSIENT HYDRODYNAMIC STIMULI", Brain, behavior and evolution, 50(5), 1997, pp. 261-283

Abstract

This study describes the discharges of central units in the medulla of the goldfish, Carassius auratus, to hydrodynamic stimuli received bythe lateral line. We stimulated the animal with a small object movingin the water and recorded activity of 85 medullary lateral line unitsin response to different motion directions and to various object distances, velocities, accelerations and sizes. All but one unit increaseddischarge rate when the moving object passed the fish laterally. Fiveresponse types were distinguished based on temporal patterns of unit responses. Ten units were recorded which encoded motion direction by different temporal discharge patterns. in general, discharge rates decreased when object distance was increased and when object speed was decreased. When object size was decreased, discharge rates decreased systematically in one group of units, but they were comparable for all butthe smallest object tested in a second group of units. Units responded about equally well whether an object was moved at a constant velocity or was accelerated when it passed the fish. The data indicate that medullary lateral line units in the goldfish can encode motion direction but are not tuned to other aspects of an object moving in the water. The functional properties of units in the medulla of goldfish are similar to those reported for medullary units in the catfish Ancistrus sp., suggesting that the central mechanisms for processing complex hydrodynamic stimuli may be quite similar in fish species that occupy habitats with different hydrodynamic conditions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 04:22:36