Higher-Order neural processing tunes motion neurons to visual ecology in three species of hawkmoths
Stöckl, A. L. LU ; O'Carroll, David LU and Warrant, E. J. LU
(2017)
In Proceedings of the Royal Society B: Biological Sciences
284(1857).
- Abstract
To sample information optimally, sensory systems must adapt to the ecological demands of each animal species. These adaptations can occur peripherally, in the anatomical structures of sensory organs and their receptors; and centrally, as higher-order neural processing in the brain. While a rich body of investigations has focused on peripheral adaptations, our understanding is sparse when it comes to central mechanisms. We quantified how peripheral adaptations in the eyes, and central adaptations in the wide-field motion vision system, set the trade-off between resolution and sensitivity in three species of hawkmoths active at very different light levels: nocturnal Deilephila elpenor, crepuscular Manduca sexta, and diurnal Macroglossum... (More)
To sample information optimally, sensory systems must adapt to the ecological demands of each animal species. These adaptations can occur peripherally, in the anatomical structures of sensory organs and their receptors; and centrally, as higher-order neural processing in the brain. While a rich body of investigations has focused on peripheral adaptations, our understanding is sparse when it comes to central mechanisms. We quantified how peripheral adaptations in the eyes, and central adaptations in the wide-field motion vision system, set the trade-off between resolution and sensitivity in three species of hawkmoths active at very different light levels: nocturnal Deilephila elpenor, crepuscular Manduca sexta, and diurnal Macroglossum stellatarum. Using optical measurements and physiological recordings from the photoreceptors and wide-field motion neurons in the lobula complex, we demonstrate that all three species use spatial and temporal summation to improve visual performance in dim light. The diurnal Macroglossum relies least on summation, but can only see at brighter intensities. Manduca, with large sensitive eyes, relies less on neural summation than the smaller eyed Deilephila, but both species attain similar visual performance at nocturnal light levels. Our results reveal howthe visual systems of these three hawkmoth species are intimately matched to their visual ecologies.
(Less)
- author
- Stöckl, A. L.
LU
; O'Carroll, David
LU
and Warrant, E. J.
LU
- organization
- publishing date
- 2017-06-28
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Dim light, Evolution, Higher-order processing, Invertebrate, Vision
- in
- Proceedings of the Royal Society B: Biological Sciences
- volume
- 284
- issue
- 1857
- article number
- 20170880
- publisher
- Royal Society Publishing
- external identifiers
-
- pmid:28637860
- wos:000405955900018
- scopus:85021067512
- ISSN
- 0962-8452
- DOI
- 10.1098/rspb.2017.0880
- language
- English
- LU publication?
- yes
- id
- def918fd-98b1-4f56-bc57-70abd0a988a2
- date added to LUP
- 2017-08-30 11:26:47
- date last changed
- 2025-01-07 19:35:26
@article{def918fd-98b1-4f56-bc57-70abd0a988a2,
abstract = {{<p>To sample information optimally, sensory systems must adapt to the ecological demands of each animal species. These adaptations can occur peripherally, in the anatomical structures of sensory organs and their receptors; and centrally, as higher-order neural processing in the brain. While a rich body of investigations has focused on peripheral adaptations, our understanding is sparse when it comes to central mechanisms. We quantified how peripheral adaptations in the eyes, and central adaptations in the wide-field motion vision system, set the trade-off between resolution and sensitivity in three species of hawkmoths active at very different light levels: nocturnal Deilephila elpenor, crepuscular Manduca sexta, and diurnal Macroglossum stellatarum. Using optical measurements and physiological recordings from the photoreceptors and wide-field motion neurons in the lobula complex, we demonstrate that all three species use spatial and temporal summation to improve visual performance in dim light. The diurnal Macroglossum relies least on summation, but can only see at brighter intensities. Manduca, with large sensitive eyes, relies less on neural summation than the smaller eyed Deilephila, but both species attain similar visual performance at nocturnal light levels. Our results reveal howthe visual systems of these three hawkmoth species are intimately matched to their visual ecologies.</p>}},
author = {{Stöckl, A. L. and O'Carroll, David and Warrant, E. J.}},
issn = {{0962-8452}},
keywords = {{Dim light; Evolution; Higher-order processing; Invertebrate; Vision}},
language = {{eng}},
month = {{06}},
number = {{1857}},
publisher = {{Royal Society Publishing}},
series = {{Proceedings of the Royal Society B: Biological Sciences}},
title = {{Higher-Order neural processing tunes motion neurons to visual ecology in three species of hawkmoths}},
url = {{http://dx.doi.org/10.1098/rspb.2017.0880}},
doi = {{10.1098/rspb.2017.0880}},
volume = {{284}},
year = {{2017}},
}