СибНСХБ

Вид поиска

Область поиска

Найдено в других БД

Формат представления найденных документов:
библиографическое описание	краткий	полный

Поисковый запрос: (<.>S=ВОЛНОВОЕ ИСКАЖЕНИЕ<.>)

Общее количество найденных документов : 1

РЖ ВИНИТИ 34 (BI19) 96.09-04И4.129

Emde, G. von der
Behavioral detection of electric signal waveform distortion in the weakly electric fish, Gnathonemus petersii [Text] / G.von der Emde, R. Zelick // J. Comp. Physiol. A. - 1995. - Vol. 177, N 4. - P498-501 . - ISSN 0340-7594
Перевод заглавия: Поведенческие [ответы] при определении волнового искажения электрического сигнала у слабоэлектрической рыбы Gnathonemus petersii
Аннотация: The "novelty response" of weakly electric mormyrids is a transient acceleration of the rate of electric organ discharges (EOD) elicited by a change in stimulus input. In this study, we used it as a tool to test whether Gnathonemus petersii can perceive minute waveform distortions of its EOD that are caused by capacitive objects, as would occur during electrolocation. Four predictions of a hypothesis concerning the mechanism of capacitance detection were tested and confirmed: (1) G. petersii exhibited a strong novelty response to computer-generated (synthetic) electric stimuli that mimic both the waveform and frequency shifts of the EOD caused by natural capacitive objects. (2) Similar responses were elicited by synthetic stimuli in which only the waveform distortion due to phase shifting the EOD frequency components was present. (3) Novelty responses could reliably be evoked by a constant amplitude phase shifted EOD that effects the entire body of the fish evenly, i. e., a phase difference across the body surface was lacking. (4) Local presentation of a phase-shifted EOD mimic that stimulated only a small number of electroreceptor organs at a single location was also effective in eliciting a behavioral response. Our results indicate that waveform distortions due to phase shifts alone, i. e. independent of amplitude or frequency cues, are sufficient for the detection of capacitive, animate objects. Mormyrids perceive even minute waveform changes of their own EODs by centrally comparing the input of the two types of receptor cells within a single mormyromast electroreceptor organ. Thus, no comparison of differentially affected body regions is necessary. This shows that G. petersii indeed uses a unique mechanism for signal analysis, which is different from the one employed by gymnotiform wavefish. США, Dep. of Biol., Portland State Univ., Portland, OR 97207. Ил. 5. Табл. 1. Библ. 32

ГРНТИ	34.33.33

ВИНИТИ 341.33.33.25.25.99
Рубрики: ЭЛЕКТРОРЕЦЕПЦИЯ
ЭЛЕКТРИЧЕСКИЕ СИГНАЛЫ
ВОЛНОВОЕ ИСКАЖЕНИЕ
ВОСПРИЯТИЕ
МЕХАНИЗМЫ
ПОВЕДЕНЧЕСКИЕ ОТВЕТЫ
СЛАБОЭЛЕКТРИЧЕСКИЕ РЫБЫ
GNATHONEMUS PETERSII

Доп.точки доступа:
Zelick, R.

"Электронные каталоги и базы данных библиотек СО РАН"

© Международная Ассоциация пользователей и разработчиков электронных библиотек и новых информационных технологий
(Ассоциация ЭБНИТ)

rtvarBDview(" результаты поиска","20190607010228","4682442");

Вид поиска