Results 31 to 40 of about 1,812 (199)

Tethered unitary recordings suggest a spike-timing electrosensory code in the electrosensory lobe of Gymnotus omarorum

Experimental Results, 2020
Evaluation of neural activity during natural behaviours is essential for understanding how the brain works. Here we show that neuron-specific self-evoked firing patterns are modulated by an object’s presence, at the electrosensory lobe neurons of ...
Alejo Rodríguez-Cattáneo, Ana-Carolina Pereira, Pedro A. Aguilera, Ángel A. Caputi, Ayca Ergul   +4 more
doaj   +1 more source

Plasticity and genetic effects contribute to different axes of neural divergence in a community of mimetic Heliconius butterflies

Journal of Evolutionary Biology, Volume 36, Issue 8, Page 1116-1132, August 2023., 2023
Comparing brain morphology across a Panamanian community of Heliconius butterflies, we find evidence for interspecific variation along two axes: heritable divergence in the size of visual brain components, and plastic differences in mushroom body size, a central component of learning and memory systems.
Laura Hebberecht, J. Benito Wainwright, Charlotte Thompson, Simon Kershenbaum, W. Owen McMillan, Stephen H. Montgomery   +5 more
wiley   +1 more source

Sensitivity of Planaria to Weak, Patterned Electric Current and the Subsequent Correlative Interactions with Fluctuations in the Intensity of the Magnetic Field of Earth

J, 2020
Some species of fish show highly evolved mechanisms by which they can detect exogenous electric and magnetic fields. The detection of electromagnetic fields has been hypothesized to exist in humans, despite the lack of specialized sensors.
Victoria Hossack, Michael Persinger, Blake Dotta   +2 more
doaj   +1 more source

Operant conditioning as a tool to assess hearing abilities in sharks

Journal of Fish Biology, Volume 103, Issue 2, Page 411-424, August 2023., 2023
Abstract Sharks (elasmobranchs) are an ancient, diverse group of fishes, representing a basal stage in the evolution of vertebrate hearing. Yet, our understanding of behavioural measures of hearing abilities in sharks is limited. To address this, an operant conditioning paradigm was designed, and scalloped hammerhead Sphyrna lewini and rig (spotted ...
Carolin Nieder, Jimmy Rapson, Kim Holland, Carl Meyer, John Montgomery, Craig Radford   +5 more
wiley   +1 more source

Ketamine disrupts locomotion and electrolocation in a novel model of schizophrenia, Gnathonemus petersii fish

Journal of Neuroscience Research, Volume 101, Issue 7, Page 1098-1106, July 2023., 2023
Ketamine elicits hyperlocomotion, reduces the number of electric organ discharges, reduces thigmotaxis and disrupts a relation between behaviour and electric activity of Gnathonemus petersii fish. Abstract The present study aimed to examine a weakly electric fish Gnathonemus petersii (G.
Veronika Langova, Petra Horka, Jan Hubeny, Tomas Novak, Karel Vales, Petr Adamek, Katerina Holubova, Jiri Horacek   +7 more
wiley   +1 more source

Electroreceptive and mechanoreceptive anatomical specialisations in the epaulette shark (Hemiscyllium ocellatum). [PDF]

PLoS ONE, 2012
The arrangement of the electroreceptive ampullary system and closely related mechanoreceptive lateral line canal system was investigated in the epaulette shark, Hemiscyllium ocellatum. The lateral line canals form an elaborate network across the head and
Marit Winther-Janson, Barbara E Wueringer, Jamie E Seymour   +2 more
doaj   +1 more source

Visual and Electrosensory Circuits of the Diencephalon in Mormyrids [PDF]

, 1990
Mormyrids are one of two groups of teleost fishes known to have evolved electroreception, and the concomitant neuroanatomical changes have confounded the interpretation of many of their brain areas in a comparative context, e.g., the diencephalon, where ...
Adams, Bell, Bell, Bell, Bell, Bell, Bell, Bergquist, Braford, Bullock, Bullock, Carr, Ebbesson, Ebbesson, Echteler, Echteler, Erdl, Fiebig, Finger, Franz, Franz, Franz, Grover, Hanker, Harder, Haugede-Carre, Haugede-Carre, Holmgren, Hopkins, Hopkins, Ito, Ito, Ito, Ito, Keller, Keller, Lauder, Lazar, Luiten, Maler, Maler, McCormick, Meek, Meek, Meek, Murakami, Murakami, Murakami, Nieuwenhuys, Nieuwenhuys, Nieuwenhuys, Nieuwenhuys, Northcutt, Northcutt, Northcutt, Northcutt, Sas, Sheldon, Stendell, Stendell, Stendell, Striedter, Striedter, Striedter, Suzuki, Szabo, van der Sprenkel, Weston, Wullimann, Wullimann, Wullimann, Wullimann   +71 more
core   +1 more source

Scientific response to a cluster of shark bites

People and Nature, Volume 4, Issue 4, Page 963-982, August 2022., 2022
Abstract Shark bites are of high public concern globally. Information on shark occurrence and behaviour, and of the effects of human behaviours, can help understand the drivers of shark‐human interactions. In Australia, a number of shark bite clusters occurred over the last decade.
Adam Barnett, Richard Fitzpatrick, Michael Bradley, Ingo Miller, Marcus Sheaves, Andrew Chin, Bethany Smith, Amy Diedrich, Jonah Lee Yick, Nicolas Lubitz, Kevin Crook, Carlo Mattone, Mike B. Bennett, Leah Wojtach, Kátya Abrantes   +14 more
wiley   +1 more source

Diversity of vibrissal follicle anatomy in cetaceans

The Anatomical Record, Volume 305, Issue 3, Page 609-621, March 2022., 2022
Abstract Most cetaceans are born with vibrissae but they can be lost or reduced in adulthood, especially in odontocetes. Despite this, some species of odontocetes have been found to have functioning vibrissal follicles (including the follicle itself and any remaining vibrissal hair shaft) that play a role in mechanoreception, proprioception and ...
Natasha Mynett, Hannah L. Mossman, Tim Huettner, Robyn A. Grant   +3 more
wiley   +1 more source

Electroreception, electrogenesis and electric signal evolution [PDF]

Journal of Fish Biology, 2019
Electroreception, the capacity to detect external underwater electric fields with specialised receptors, is a phylogenetically widespread sensory modality in fishes and amphibians. In passive electroreception, a capacity possessed byc. 16% of fish species, an animal uses low‐frequency‐tuned ampullary electroreceptors to detect microvolt‐range ...
William G. R. Crampton
openalex   +4 more sources