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A small vocal repertoire during the breeding season expresses complex behavioral motivations and individual signature in the common coot

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BMC ZOOLOGY 2021年第1期6卷 24页

作者： Fu, Changjian Kathait, Atul Lu, Guangyi Li, Xiang Li, Feng Xing, Xiaoying Northeast Forestry Univ Coll Wildlife & Protected Area Hexing Rd 26 Harbin Peoples R China Apeejay Stya Univ Sch Biosci Gurgaon 122103 Haryana India Henan Univ Urban Construct Pingdingshan 467036 Peoples R China

Background: Although acoustic communication plays an essential role in the social interactions of Rallidae, our knowledge of how Rallidae encode diverse types of information using simple vocalizations is limited. We recorded and examined the vocalizations of a common coot (Fulica atra) population during the breeding season to test the hypotheses that 1) different call types can be emitted under different behavioral contexts, and 2) variation in the vocal structure of a single call type may be influenced both by behavioral motivations and individual signature. We measured a total of 61 recordings of 30 adults while noting the behavioral activities in which individuals were engaged. We compared several acoustic parameters of the same call type emitted under different behavioral activities to determine how frequency and temporal parameters changed depending on behavioral motivations and individual differences. Results: We found that adult common coots had a small vocal repertoire, including 4 types of call, composed of a single syllable that was used during 9 types of behaviors. The 4 calls significantly differed in both frequency and temporal parameters and can be clearly distinguished by discriminant function analysis. Minimum frequency of fundamental frequency (F-0min) and duration of syllable (T) contributed the most to acoustic divergence between calls. Call a was the most commonly used (in 8 of the 9 behaviors detected), and maximum frequency of fundamental frequency (F-0max) and interval of syllables (TI) contributed the most to variation in call a. Duration of syllable (T) in a single call a can vary with different behavioral motivations after individual vocal signature being controlled. Conclusions: These results demonstrate that several call types of a small repertoire, and a single call with function-related changes in the temporal parameter in common coots could potentially indicate various behavioral motivations and individual signature. This study advance

关键词： Behavioral motivation Small call repertoire Frequency and temporal parameters information coding Rallidae Fulica atra

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Polarization selection by optical feedback

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OPTICS COMMUNICATIONS 2006年第1期268卷 169-173页

作者： Meucci, R. Salvadori, F. Leyva, I. Marino, I. P. Al Naimee, K. Capo, M. Ist Nazl Ott Applicata CNR I-50125 Florence Italy Univ Rey Juan Carlos Madrid 28933 Spain Univ Baghdad Coll Sci Dept Phys Baghdad Iraq

We present experimental and numerical evidence of polarization selection in an isotropic CO2 laser achieved by means of an unpolarized optical feedback. This mechanism can be applied in situations where the direction ... 详细信息

关键词： polarization control information coding

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Anal gland secretion codes for family membership in the beaver

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BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY 1998年第3期44卷 199-208页

作者： Sun, LX Müller-Schwarze, D Cent Washington Univ Dept Biol Sci Ellensburg WA 98926 USA SUNY Syracuse Coll Environm Sci Syracuse NY 13210 USA

We investigated how information about family membership is coded by the individually specific anal gland secretion (AGS) in the beaver, Castor canadensis. Because beavers live in strict family units and relatives share more features in the AGS profile than non-relatives, family members share more AGS features than non-family members. Therefore, family recognition seems to be a natural consequence of the more specific kin recognition. Multivariate statistical analyses revealed two possibilities in coding for family membership using the multi-component AGS: either two (female) to three (male) AGS compounds or many compounds were used, but we were not able to determine which possibility is more likely. Compounds were not equally important in coding family membership information, and the interactions among compounds were complex. We attempted to reconstruct a lineage tree for the relationship among different families using two-three or many compounds. We found there was no significant difference for trees constructed by using few or many compounds in either males or females. However, the trees derived from male compounds and female compounds lacked good congruence.

关键词： beaver Castor canadensis anal gland secretion information coding family membership

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A feature-binding model with localized excitations

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NEUROCOMPUTING 2007年第10-12期70卷 1706-1710页

作者： Schrobsdorff, Hecke Herrmann, J. Michael Geisel, Theo Bernstein Ctr Computat Neurosci Gottingen Germany Univ Gottingen Inst Nonlinear Dynam D-3400 Gottingen Germany Max Planck Inst Dynam & Self Org D-37073 Gottingen Germany

We study a model of feature binding in prefrontal cortex which defers specific perceptual information to lower areas and merely maintains the identity of the combination. The model consists of three layers of pulse-coupled leaky integrate-and-fire neurons. Features are encoded by the location of sustained activity in the subordinate layers. The feature layers are excitatorily coupled to a superordinate layer that represents combinations of features by means of an oscillatory dynamics. The model accounts for effects such as the memorization of an object that was perceived only for a short period, illusory binding of simultaneous stimuli, and the limit of attentional capacity. The present paper discusses conditions for localized excitations in networks of integrate-and-fire neurons and considers the application to a dynamic link architecture. (c) 2006 Elsevier B.V. All rights reserved.

关键词： feature binding information coding attention working memory prefrontal cortex

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Polarization synchronization in quasi-isotropic CO₂ lasers

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OPTICS COMMUNICATIONS 2007年第2期276卷 272-276页

作者： Marino, I. P. Al Naimee, K. Salvadori, F. Capo, M. Meucci, R. Arecchi, F. T. CNR Ist Nazl Ottica Appl I-50125 Florence Italy Univ Rey Junan Carlos Dept Fis Madrid 28933 Spain Univ Baghdad Coll Sci Dept Phys Baghdad Iraq Univ Florence Dept Phys I-50121 Florence Italy

We present experimental evidence of the in-phase and out-phase synchronization of the polarization in two coupled quasi-isotropic CO2 lasers. We also show, by means of numerical simulations, how it is possible to retrieve message encoded in the polarization of the master laser from the observation of the slave laser alone, due to the synchronization. (c) 2007 Published by Elsevier B.V.

关键词： polarization synchronization control information coding

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Template-less Synthesis of Coded Au Nanowires

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NANO LETTERS 2021年第2期21卷 1156-1160页

作者： Wu, Xuesong Li, Hongyan Wang, Weiyu Su, Dongmeng Wang, Xi Tao, Xiaolin Wang, Yawen Chen, Hongyu Nanjing Tech Univ Jiangsu Natl Synerget Innovat Ctr Adv Mat Inst Adv Synth Nanjing 211816 Peoples R China Nanjing Tech Univ Jiangsu Natl Synerget Innovat Ctr Adv Mat Sch Chem & Mol Engn Nanjing 211816 Peoples R China

Morphological coding of nanostructures represents a capability in rapid modulation of structural features and most importantly, the transcription of information into nanoscale. Exploiting the regioselectivity in the template-less electrochemical synthesis of ultrathin Au nanowires, we show that rapid alternation of applied potential would cause corresponding change in the width of the emerging nanowire segments. By understanding the growth kinetics, a strong correlation between the nanowire morphologies and the deposition potential is established and applied in emulating the Morse code.

关键词： Electrodeposition programmable synthesis ultrathin nanowire information coding

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Synaptic plasticity of NMDA receptors: mechanisms and functional implications

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CURRENT OPINION IN NEUROBIOLOGY 2012年第3期22卷 496-508页

作者： Hunt, David L. Castillo, Pablo E. Albert Einstein Coll Med Dept Neurosci Kennedy Ctr Bronx NY 10461 USA

Beyond their well-established role as triggers for LTP and LTD of fast synaptic transmission mediated by AMPA receptors, an expanding body of evidence indicates that NMDA receptors (NMDARs) themselves are also dynamically regulated and subject to activity-dependent long-term plasticity. NMDARs can significantly contribute to information transfer at synapses particularly during periods of repetitive activity. It is also increasingly recognized that NMDARs participate in dendritic synaptic integration and are critical for generating persistent activity of neural assemblies. Here we review recent advances on the mechanisms and functional consequences of NMDAR plasticity. Given the unique biophysical properties of NMDARs, synaptic plasticity of NMDAR-mediated transmission emerges as a particularly powerful mechanism for the fine tuning of information encoding and storage throughout the brain.

关键词： Long-Term Potentiation Synaptic plasticity Synaptic Transmission TRIGGERS n methyl dextro aspartic acid receptor information coding fine tuning AMPA Receptors information Transfer

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Regulation of AMPA receptor trafficking and synaptic plasticity

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CURRENT OPINION IN NEUROBIOLOGY 2012年第3期22卷 461-469页

作者： Anggono, Victor Huganir, Richard L. Johns Hopkins Univ Sch Med Dept Neurosci Howard Hughes Med Inst Baltimore MD 21205 USA

AMPA receptors (AMPARs) mediate the majority of fast excitatory synaptic transmission in the brain. Dynamic changes in neuronal synaptic efficacy, termed synaptic plasticity, are thought to underlie information coding and storage in learning and memory. One major mechanism that regulates synaptic strength involves the tightly regulated trafficking of AMPARs into and out of synapses. The life cycle of AMPARs from their biosynthesis, membrane trafficking, and synaptic targeting to their degradation are controlled by a series of orchestrated interactions with numerous intracellular regulatory proteins. Here we review recent progress made toward the understanding the regulation of AMPAR trafficking, focusing on the roles of several key intracellular AMPAR interacting proteins.

关键词： AMPA Receptors Synaptic plasticity Excitatory synaptic transmission Synaptic strength information coding synaptic efficacy

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The effect of clofilium, a K-channel blocker, on the electrogenic K secretion and the sensory discharge at the frog semicircular canal

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BRAIN RESEARCH 1996年第1-2期721卷 174-180页

作者： Rossi, ML Ferrary, E Martini, A Martini, M Pelucchi, B Bernard, C Teixeira, M Sterkers, O Fesce, R UNIV PARIS 07 INSERMU426FAC XAVIER BICHATF-75018 PARISFRANCE UNIV FERRARA INST OTORHINOLARYNGOLI-44100 FERRARAITALY HOSP SAN RAFFAELE DIBITCNR CYTOPHARMACOLI-20132 MILANITALY

Potassium transport by dark cells produces marked K-concentration differences between endo- and perilymphatic fluids in labyrinthine organs and generates the transepithelial potential. The ensuing electrochemical potential for K sustains the transduction current which regulates activity at the cytoneural junction. Clofilium, a compound which is known to block cardiac K channels and to decrease the endocochlear potential, was applied to the endolymphatic side of the isolated from semicircular canal. The drug abolished the transepithelial potential and increased K outflux from the lumen to the dark cells (or the basolateral perilymph) with no apparent interference with active K secretion. When applied to the perilymphatic side in the intact labyrinth clofilium reduced the rate of occurrence of miniature excitatory postsynaptic potentials (mEPSPs), both at rest and in response to mechanical stimulation (sinusoidal rotation at 0.1 Hz, 12.5 deg/s(2) peak acceleration). This effect may be related to a reduced K-electrochemical unbalance and a decreased transduction current. The drug consistently reduced mEPSP size, although amplitude distributions remained log-normal and time intervals between successive mEPSPs remained exponentially distributed;this suggests a direct effect of clofilium on the postsynaptic membrane, in addition to any possible presynaptic effects. Spike discharge by the afferent fibre was almost completely abolished at rest and responses to mechanical stimulation were reduced by 85-90%. These effects cannot be accounted for by the mild reduction of mEPSP rates and confirm a direct action of clofilium on the afferent postsynaptic terminal.

关键词： frog labyrinth clofilium transepithelial potential K secretion synaptic transmission information coding

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Quantum Secure Direct Communication Achieved by Using Multi-Entanglement

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INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 2015年第1期54卷 100-105页

作者： Li, Wenlin Chen, Junbo Wang, Xiaolong Li, Chong Dalian Univ Technol Sch Phys & Optoelect Engn Dalian 116024 Peoples R China

Aquantum secure direct communication (QSDC) scheme is proposed based on multi-body entangled system in this paper. The mathematical description of the QSDC scheme is given firstly and the process of direct communication is investigated. The communication scheme based on multi-body entangled system and the general method of information coding are further completed. Finally, a communication scheme using four-body systems is introduced as example.

关键词： QSDC Multi-body entangled system information coding Mathematical description

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