Sensory Systems in Sawfishes. 1. The Ampullae of Lorenzini

2011 ◽  
Vol 78 (2) ◽  
pp. 139-149 ◽  
Author(s):  
B.E. Wueringer ◽  
S.C. Peverell ◽  
J. Seymour ◽  
L. Squire, Jr. ◽  
S.M. Kajiura ◽  
...  
Keyword(s):  
Sensory Systems ◽  
Ampullae Of Lorenzini

scholarly journals Description of the mechanoreceptive lateral line and electroreceptive ampullary systems in the freshwater whipray, Himantura dalyensis

2011 ◽  
Vol 62 (6) ◽  
pp. 771 ◽  
Author(s):  
Teagan A. Marzullo ◽  
Barbara E. Wueringer ◽  
Lyle Squire Jnr ◽  
Shaun P. Collin
Keyword(s):  
Lateral Line ◽  
Related Species ◽  
Sensory Systems ◽  
Low Salinity ◽  
Dasyatis Sabina ◽  
Estuarine Species ◽  
Ampullae Of Lorenzini ◽  
Infraorbital Canal ◽  
Elasmobranch Species ◽  
Elasmobranch Fishes

Mechanoreceptive and electroreceptive anatomical specialisations in freshwater elasmobranch fishes are largely unknown. The freshwater whipray, Himantura dalyensis, is one of a few Australian elasmobranch species that occur in low salinity (oligohaline) environments. The distribution and morphology of the mechanoreceptive lateral line and the electroreceptive ampullae of Lorenzini were investigated by dissection and compared with previous studies on related species. The distribution of the pit organs resembles that of a marine ray, Dasyatis sabina, although their orientation differs. The lateral line canals of H. dalyensis are distributed similarly compared with two marine relatives, H. gerrardi and D. sabina. However, convolutions of the ventral canals and proliferations of the infraorbital canal are more extensive in H. dalyensis than H. gerrardi. The intricate nature of the ventral, non-pored canals suggests a mechanotactile function, as previously demonstrated in D. sabina. The ampullary system of H. dalyensis is not typical of an obligate freshwater elasmobranch (i.e. H. signifer), and its morphology and pore distribution resembles those of marine dasyatids. These results suggest that H. dalyensis is euryhaline, with sensory systems adapted similarly to those described in marine and estuarine species.

Review of Sensory Systems I: Vision and Visual Systems.

1991 ◽  
Vol 36 (1) ◽  
pp. 82-82
Author(s):  
No authorship indicated
Keyword(s):  
Sensory Systems ◽  
Visual Systems

Development of Sensory Systems

1978 ◽  
Author(s):  
C. M. Bate ◽  
V. McM. Carr ◽  
P. P. C. Graziadei ◽  
H. V. B. Hirsch ◽  
A. Hughes ◽  
...  
Keyword(s):  
Sensory Systems

scholarly journals Neurophysiology goes wild: from exploring sensory coding in sound proof rooms to natural environments

2021 ◽  
Vol 207 (3) ◽  
pp. 303-319
Author(s):  
Heiner Römer
Keyword(s):  
Sensory System ◽  
Sensory Systems ◽  
Natural Environments ◽  
Sensory Coding ◽  
Noise Levels ◽  
Sensory Physiology ◽  
Sound Localisation ◽  
Physical Environments ◽  
History Of ◽  
Adaptive Behaviours

AbstractTo perform adaptive behaviours, animals have to establish a representation of the physical “outside” world. How these representations are created by sensory systems is a central issue in sensory physiology. This review addresses the history of experimental approaches toward ideas about sensory coding, using the relatively simple auditory system of acoustic insects. I will discuss the empirical evidence in support of Barlow’s “efficient coding hypothesis”, which argues that the coding properties of neurons undergo specific adaptations that allow insects to detect biologically important acoustic stimuli. This hypothesis opposes the view that the sensory systems of receivers are biased as a result of their phylogeny, which finally determine whether a sound stimulus elicits a behavioural response. Acoustic signals are often transmitted over considerable distances in complex physical environments with high noise levels, resulting in degradation of the temporal pattern of stimuli, unpredictable attenuation, reduced signal-to-noise levels, and degradation of cues used for sound localisation. Thus, a more naturalistic view of sensory coding must be taken, since the signals as broadcast by signallers are rarely equivalent to the effective stimuli encoded by the sensory system of receivers. The consequences of the environmental conditions for sensory coding are discussed.

An endurance, temperature-resilient, and robust organic electrochemical transistor for neuromorphic circuits

2021 ◽  
Author(s):  
songjia han ◽  
Shunlin Yu ◽  
Sujuan Hu ◽  
Hui-Jiuan Chen ◽  
Jin Wu ◽  
...  
Keyword(s):  
Sensory Systems ◽  
Neuromorphic Circuits ◽  
Electrochemical Transistor ◽  
Organic Electrochemical Transistors

Artificial synapses, combining sensing and computing functions, have played an important role in emerging human-like sensory systems. In particular, organic electrochemical transistors (OECTs) are highly sought as promising candidates because...

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