Annual life-history dependent seasonal differences in neural activity of the olfactory system between non-migratory and migratory songbirds

2016 ◽  
Vol 296 ◽  
pp. 233-239 ◽  
Author(s):  
Ashutosh Rastogi ◽  
Surbhi ◽  
Shalie Malik ◽  
Sangeeta Rani ◽  
Vinod Kumar
Keyword(s):  
Life History ◽  
Neural Activity ◽  
Olfactory System ◽  
Seasonal Differences ◽  
Migratory Songbirds ◽  
Annual Life History

scholarly journals Habituation as a neural algorithm for online odor discrimination

2020 ◽  
Vol 117 (22) ◽  
pp. 12402-12410 ◽  
Author(s):  
Yang Shen ◽  
Sanjoy Dasgupta ◽  
Saket Navlakha
Keyword(s):  
Neural Activity ◽  
Olfactory System ◽  
Simple Algorithm ◽  
Fruit Fly ◽  
Neural Systems ◽  
Redundant Information ◽  
Biological Mechanism ◽  
Sensory Physiology ◽  
Odor Perception ◽  
Odor Mixtures

Habituation is a form of simple memory that suppresses neural activity in response to repeated, neutral stimuli. This process is critical in helping organisms guide attention toward the most salient and novel features in the environment. Here, we follow known circuit mechanisms in the fruit fly olfactory system to derive a simple algorithm for habituation. We show, both empirically and analytically, that this algorithm is able to filter out redundant information, enhance discrimination between odors that share a similar background, and improve detection of novel components in odor mixtures. Overall, we propose an algorithmic perspective on the biological mechanism of habituation and use this perspective to understand how sensory physiology can affect odor perception. Our framework may also help toward understanding the effects of habituation in other more sophisticated neural systems.

Vulnerability to eutrophication of a semi-annual life history: A lesson learnt from an extinct eelgrass (Zostera marina) population

2010 ◽  
Vol 143 (1) ◽  
pp. 248-254 ◽  
Author(s):  
Marieke M. van Katwijk ◽  
Arthur R. Bos ◽  
Peer Kennis ◽  
Rob de Vries
Keyword(s):  
Life History ◽  
Zostera Marina ◽  
Annual Life History

Seasonal cycle of the nest composition in the Ponerine ant Cryptopone sauteri (Hymenoptera: Formicidae)

Sociobiology ◽  
2017 ◽  
Vol 64 (4) ◽  
pp. 393
Author(s):  
Yuki Yamaguchi ◽  
Hiromi Yazawa ◽  
Satoru Iwanishi ◽  
Kazuyuki Kudô
Keyword(s):  
Life History ◽  
Seasonal Changes ◽  
Seasonal Cycle ◽  
Quantitative Information ◽  
Social Structures ◽  
Ecological Studies ◽  
Brood Development ◽  
Ponerine Ant ◽  
History Of ◽  
Annual Life History

The annual life history is a basic and important factor in ecological studies on temperate ant species. The biology of Ponerinae species has been studied for many species, but little attention has been paid to their life history. Cryptopone sauteri is one of the most common ants in temperate regions of Japan. However, there is no quantitative information on the life history of this species. We report seasonal changes in brood development, the emergence of reproductives and social structures of C. sauteri. Additionally, we discuss that this species possibly exhibits a polydomous nesting system.

scholarly journals Circadian timing in central and peripheral tissues in a migratory songbird: dependence on annual life‐history states

2015 ◽  
Vol 29 (10) ◽  
pp. 4248-4255 ◽  
Author(s):  
Devraj Singh ◽  
Amit Kumar Trivedi ◽  
Sangeeta Rani ◽  
Satchidananda Panda ◽  
Vinod Kumar
Keyword(s):  
Life History ◽  
Peripheral Tissues ◽  
Circadian Timing ◽  
Migratory Songbird ◽  
Annual Life History

Annual Life History–Dependent Gene Expression in the Hypothalamus and Liver of a Migratory Songbird

2014 ◽  
Vol 29 (5) ◽  
pp. 332-345 ◽  
Author(s):  
Amit K. Trivedi ◽  
Jayant Kumar ◽  
Sangeeta Rani ◽  
Vinod Kumar
Keyword(s):  
Gene Expression ◽  
Life History ◽  
Migratory Songbird ◽  
Annual Life History

scholarly journals Evolution of morphological and climatic adaptations inVeronica L.(Plantaginaceae)

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2333 ◽  
Author(s):  
Jian-Cheng Wang ◽  
Bo-Rong Pan ◽  
Dirk C. Albach
Keyword(s):  
Life History ◽  
Substitution Rate ◽  
Parallel Evolution ◽  
Morphological Characters ◽  
Annual Species ◽  
Selective Pressures ◽  
History Of ◽  
Phylogenetic Perspective ◽  
Drought Resistant ◽  
Annual Life History

Perennials and annuals apply different strategies to adapt to the adverse environment, based on ‘tolerance’ and ‘avoidance’, respectively. To understand lifespan evolution and its impact on plant adaptability, we carried out a comparative study of perennials and annuals in the genusVeronicafrom a phylogenetic perspective. The results showed that ancestors of the genusVeronicawere likely to be perennial plants. Annual life history ofVeronicahas evolved multiple times and subtrees with more annual species have a higher substitution rate. Annuals can adapt to more xeric habitats than perennials. This indicates that annuals are more drought-resistant than their perennial relatives. Due to adaptation to similar selective pressures, parallel evolution occurs in morphological characters among annual species ofVeronica.

Chaotic itinerancy: Insufficient perceptual evidence

2001 ◽  
Vol 24 (5) ◽  
pp. 819-820 ◽  
Author(s):  
Leslie M. Kay
Keyword(s):  
Information Processing ◽  
Neural Activity ◽  
Olfactory System ◽  
Attractor Dynamics ◽  
Large Step ◽  
Perceptual Evidence ◽  
Cantor Coding

Chaotic itinerancy is useful for illustrating transitions in attractor dynamics seen in the olfactory system. Cantor coding is a good model for information processing, but so far it lacks perceptual proof. The theories presented provide a large step toward bridging the use of chaos as an interpretive tool and hard examination of chaotic neural activity during perception.

Calcium Imaging of Neural Activity in the Olfactory System of Drosophila

2012 ◽  
pp. 43-70 ◽  
Author(s):  
Antonia Strutz ◽  
Thomas Völler ◽  
Thomas Riemensperger ◽  
André Fiala ◽  
Silke Sachse
Keyword(s):  
Neural Activity ◽  
Calcium Imaging ◽  
Olfactory System
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