Jamming avoidance during active electrolocation of objects in the weakly electric fish, Gnathonemus petersii
نویسندگان
چکیده
منابع مشابه
Electrosensory capture during multisensory discrimination of nearby objects in the weakly electric fish Gnathonemus petersii
Animal multisensory systems are able to cope with discrepancies in information provided by individual senses by integrating information using a weighted average of the sensory inputs. Such sensory weighting often leads to a dominance of a certain sense during particular tasks and conditions, also called sensory capture. Here we investigated the interaction of vision and active electrolocation d...
متن کاملThe electric image in weakly electric fish: physical images of resistive objects in Gnathonemus petersii.
The present study describes a measurement-based model of electric image generation in the weakly electric mormyrid fish Gnathonemus petersii. Measurements of skin impedance, internal resistivity and fish body dimensions have been used to generate an electrical-equivalent model of the fish and to calculate electrical images and equivalent dipole sources for elementary resistive objects. These ca...
متن کاملActive electrolocation of objects in weakly electric fish
Weakly electric fish produce electric signals (electric organ discharges, EODs) with a specialised electric organ creating an electric field around their body. Objects within this field alter the EOD-induced current at epidermal electroreceptor organs, which are distributed over almost the entire body surface. The detection, localisation and analysis of objects performed by monitoring self-prod...
متن کاملModeling Active Electrolocation in Weakly Electric Fish
In this paper, we provide a mathematical model for the electrolocation in weakly electric fishes. We first investigate the forward complex conductivity problem and derive the approximate boundary conditions on the skin of the fish. Then we provide a dipole approximation for small targets away from the fish. Based on this approximation, we obtain a non-iterative location search algorithm using m...
متن کاملLandmark use and development of navigation behaviour in the weakly electric fish Gnathonemus petersii (Mormyridae; Teleostei).
African mormyrids, such as Gnathonemus petersii, migrate: nocturnally, from daytime shelters to find food and return by morning, and seasonally, spawning in swamps flooded during the rainy season. The present study examined whether the fish use landmarks detected via electrolocation to locate an aperture, whether they detect changes in landmark size and respond appropriately, whether landmarks ...
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ژورنال
عنوان ژورنال: Frontiers in Behavioral Neuroscience
سال: 2012
ISSN: 1662-5153
DOI: 10.3389/conf.fnbeh.2012.27.00230