Annals of the New York Academy of Sciences最新文献

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Electromagnetic fields modulate neuronal membrane ionic currents through altered cellular calcium homeostasis. 电磁场通过改变细胞钙稳态调节神经元膜离子电流。
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-26 DOI: 10.1111/nyas.15386
Federico Bertagna,Shiraz Ahmad,Rebecca Lewis,S Ravi P Silva,Johnjoe McFadden,Christopher L-H Huang,Hugh R Matthews,Kamalan Jeevaratnam
{"title":"Electromagnetic fields modulate neuronal membrane ionic currents through altered cellular calcium homeostasis.","authors":"Federico Bertagna,Shiraz Ahmad,Rebecca Lewis,S Ravi P Silva,Johnjoe McFadden,Christopher L-H Huang,Hugh R Matthews,Kamalan Jeevaratnam","doi":"10.1111/nyas.15386","DOIUrl":"https://doi.org/10.1111/nyas.15386","url":null,"abstract":"The biological effects of electromagnetic fields (EMFs) on the central nervous system (CNS) have been widely reported in the literature. Their nature and extent are thought to depend on parameters such as field intensity and frequency. Of these, extremely low-frequency (50 Hz) fields have been reported to influence neuronal firing in CNS regions, including the hippocampus. We applied the loose patch clamp technique to study the effects of 1 mT exposures of such fields over the course of 60 min on cornus ammonis 1 (CA1) pyramidal neuron membranes in coronal hippocampal slices. Such exposure decreased both inward and transient outward currents. Pharmacological blockers of ryanodine receptor (RyR)-dependent Ca2+ release (dantrolene) and endoplasmic reticular Ca2+ store reuptake (SERCA; cyclopiazonic acid) both abrogated these effects. We thus implicate Ca2+ homeostasis in an EMF-induced modulation of neuronal excitability through its regulation of voltage-gated channels.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"7 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Real-time measurement of entropy production and export in humans: A step toward entropically informed medicine. 人类熵产生和输出的实时测量:向熵信息医学迈出的一步。
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-26 DOI: 10.1111/nyas.15385
Nicolas Brodeur,André Longtin,Glen P Kenny,Andrew J E Seely
{"title":"Real-time measurement of entropy production and export in humans: A step toward entropically informed medicine.","authors":"Nicolas Brodeur,André Longtin,Glen P Kenny,Andrew J E Seely","doi":"10.1111/nyas.15385","DOIUrl":"https://doi.org/10.1111/nyas.15385","url":null,"abstract":"Biological organisms are open thermodynamic systems in which internal structure and function arise from a network of heat- and entropy-producing processes, requiring external export of heat and entropy to the environment. System stability, including health and healing, is hypothesized to relate to the mass-normalized rate of entropy production and export, and the capacity to augment both when required. Using a novel methodological framework that allows the continuous measurement of heat fluxes and body temperature, we can estimate internal entropy production and external entropy export in humans during exercise under heat stress. We report the impairment of entropy export leading to entropy accumulation in association with increasing age, reduced fitness, and the presence of diabetes. In all conditions, impairment was also found to be negatively correlated with the VO2 max fitness measure. Our analyses make use of direct calorimetry to quantify rates of heat loss and indirect calorimetry to measure metabolic heat production and core temperature in real time. Our results highlight the potential relevance of the entropy balance to the definition of health and open the possibility of designing novel therapeutic approaches based on nonequilibrium thermodynamics to improve patient care.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"653 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic microglia/macrophage infiltration during spinal cord regeneration in larval sea lamprey. 海七鳃鳗幼体脊髓再生过程中动态小胶质细胞/巨噬细胞浸润。
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-25 DOI: 10.1111/nyas.15396
Eduardo Guadarrama,Logan W Heisse,Jennifer R Morgan,Hilary R Katz
{"title":"Dynamic microglia/macrophage infiltration during spinal cord regeneration in larval sea lamprey.","authors":"Eduardo Guadarrama,Logan W Heisse,Jennifer R Morgan,Hilary R Katz","doi":"10.1111/nyas.15396","DOIUrl":"https://doi.org/10.1111/nyas.15396","url":null,"abstract":"Both mammals and non-mammalian vertebrates display neuroimmune interactions after spinal cord injury (SCI). However, the impact of the immune response on neural regeneration remains unclear as it includes both proregenerative and inhibitory processes. To begin to understand how neuroimmune interactions influence central nervous system (CNS) regeneration, we examined the distribution of microglia/macrophages in relation to regenerating axons in larval sea lamprey (Petromyzon marinus), a non-mammalian vertebrate that exhibits robust axon and synapse regeneration after SCI. The relationship between microglia/macrophages and spinal axons was examined in cryosections of control and transected spinal cords using immunofluorescence. SCI significantly increased microglia/macrophage density within the spinal cord, as shown by isolectin B4 labeling. At 11 weeks post-injury (WPI), microglia/macrophages made physical contacts with regenerating axons, on average a three-fold increase compared to controls. These results are consistent with the conclusion that microglia/macrophage infiltration is associated with axon regeneration. Understanding the importance of these neuroimmune interactions could bring insight into cellular and molecular mechanisms that promote regeneration in the mammalian CNS.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"9 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Music-based interventions for nonfluent aphasia: A systematic review of randomized control trials. 基于音乐的非流利性失语症干预:随机对照试验的系统回顾。
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-21 DOI: 10.1111/nyas.15387
Yuko Koshimori,Preetie Shetty Akkunje,Evelyn Tjiandri,Julia B Kowaleski,Michael H Thaut
{"title":"Music-based interventions for nonfluent aphasia: A systematic review of randomized control trials.","authors":"Yuko Koshimori,Preetie Shetty Akkunje,Evelyn Tjiandri,Julia B Kowaleski,Michael H Thaut","doi":"10.1111/nyas.15387","DOIUrl":"https://doi.org/10.1111/nyas.15387","url":null,"abstract":"Music-based interventions (MBIs) offer promising strategies for addressing speech-language impairments in individuals with nonfluent aphasia. This systematic review summarizes the current literature of MBIs for nonfluent aphasia recovery by types of MBIs to determine the efficacy of MBIs and assesses the risk of bias to identify common methodological limitations. A systematic search was conducted of MEDLINE, PubMed, and APA PsycInfo for the 20 years preceding July 2024. Risk of bias assessment was performed using the revised Joanna Briggs Institute critical appraisal tool for randomized controlled trials (RCTs). Ten RCTs met the inclusion criteria, featuring MBIs such as Melodic Intonation Therapy, Modified Melodic Intonation Therapy, and singing-based approaches. The results highlighted the potential of MBIs in various domains, particularly in enhancing repetition and naming abilities, even when compared to speech therapy. The reviewed studies exhibited a moderate to high risk of bias. Outcome measures varied widely, and functional communication, a critical rehabilitation goal, was examined in just two RCTs. Furthermore, heterogeneous control conditions and statistical methods hindered meaningful comparisons across studies. Future research should prioritize functional communication outcomes and refine intervention protocols to strengthen the evidence base. Addressing these gaps is essential for advancing the potential benefits of these clinical tools for nonfluent aphasia recovery.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"46 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation of multiple parameter effects on efficiency of uranium ore acid leaching 多参数对铀矿酸浸效率影响的模拟
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-18 DOI: 10.1111/nyas.15384
Guijun Luo, Chuanfei Zhang, Xiangxue Zhang, Wenji Wang, Meifang Chen, Mingtao Jia
{"title":"Simulation of multiple parameter effects on efficiency of uranium ore acid leaching","authors":"Guijun Luo, Chuanfei Zhang, Xiangxue Zhang, Wenji Wang, Meifang Chen, Mingtao Jia","doi":"10.1111/nyas.15384","DOIUrl":"https://doi.org/10.1111/nyas.15384","url":null,"abstract":"This study investigates factors influencing the leaching process in uranium mining, using a uranium mine in Inner Mongolia, China, as a representative case. We used PHREEQC geochemical and COMSOL Multiphysics® software, as well as the coupling interface COMSOL PHREEQC (iCP), to simulate acid leaching of underground core mineral samples. The study systematically analyzes the effects of sulfuric acid concentration, permeability coefficient, and injection/leaching pressure differential on uranium leaching efficiency. It also reveals spatial and temporal variations of minerals throughout the leaching process. The findings include a positive correlation between sulfuric acid concentration and leaching rate. Increased permeability significantly enhanced the leaching effect, while the injection/leaching pressure differential had an optimal range. Additionally, mineral evolution characteristics suggested that acidophilic minerals dissolve rapidly in initial stages, whereas later stages may involve minerals such as kaolinite and quartz influencing pore structure. These findings provide a foundation for optimizing process parameters in uranium mining and offer a quantitative reference for micro-scale mineral changes, ultimately for efficient and sustainable uranium extraction.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"51 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mating system and copulatory behavior of the greater mouse-eared bat (Myotis myotis) 大鼠耳蝠的交配制度和交配行为
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-18 DOI: 10.1111/nyas.15390
Lisa Printz, Anika Lustig, Martina Nagy, Mirjam Knörnschild
{"title":"Mating system and copulatory behavior of the greater mouse-eared bat (Myotis myotis)","authors":"Lisa Printz, Anika Lustig, Martina Nagy, Mirjam Knörnschild","doi":"10.1111/nyas.15390","DOIUrl":"https://doi.org/10.1111/nyas.15390","url":null,"abstract":"Mammalian mating systems, which form the cornerstone of social systems, are shaped by diverse ecological and sociobiological factors, and they influence behavior and reproductive success. Among mammals, bats exhibit a remarkable diversity of mating systems, making them ideal for studying their complexity; yet, interspecific variations of bat mating systems remain largely unknown. To address this, we surveyed six roosts of the greater mouse-eared bat (<i>Myotis myotis</i>) over 2 years, uncovering novel aspects of their mating system. Our findings suggest a lek mating system, where males aggregate and are visited by receptive females. Mating involves multiple copulations and distinct body postures, with the female remaining with the male for several hours. Male roost occupancy peaked in August, reflecting a phenological cycle. Males demonstrated pronounced territoriality and site fidelity, defending display spots with vocalizations and physical confrontations, underscoring their important role in securing mating success. Complex vocalizations appeared crucial for deterring rivals and attracting females, suggesting vocal signals govern mate choice by females. Additionally, a yellow facial secretion observed in males may function as an olfactory signal during mate selection. This study provides valuable insights into the mating system of <i>M. myotis</i>, with implications for understanding the species’ behavioral ecology and contributing to conservation strategies.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"39 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the photon–classical electromagnetic field relationship 论光子-经典电磁场关系
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-18 DOI: 10.1111/nyas.15378
Daniela Dragoman
{"title":"On the photon–classical electromagnetic field relationship","authors":"Daniela Dragoman","doi":"10.1111/nyas.15378","DOIUrl":"https://doi.org/10.1111/nyas.15378","url":null,"abstract":"This paper discusses how the two ways in which the wavefunction of a free-propagating photon can be introduced—starting from the relativistic energy−momentum relationship or based on the electromagnetic field, in particular on Riemann–Silberstein vectors—are not entirely equivalent since they can lead to different consequences regarding photon localization. In the first case, a phase space localization in regions of the order of Planck's constant, in agreement with the quantum uncertainty principle, could be unambiguously obtained. In the second case, the choice of canonically conjugate variables and Fourier transforms determines if the state is treated quantumly or classically. Both formalisms are, however, compatible.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"36 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144311702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of type 1 diabetes on binocular vision: Evidence from a comparative analysis 1型糖尿病对双眼视力的影响:来自比较分析的证据
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-15 DOI: 10.1111/nyas.15381
María‐Carmen Silva‐Viguera, María Carmen Sánchez‐González, Víctor Ponce‐García, Concepción De‐Hita‐Cantalejo, José‐María Sánchez‐González, María‐José Bautista‐Llamas
{"title":"Impact of type 1 diabetes on binocular vision: Evidence from a comparative analysis","authors":"María‐Carmen Silva‐Viguera, María Carmen Sánchez‐González, Víctor Ponce‐García, Concepción De‐Hita‐Cantalejo, José‐María Sánchez‐González, María‐José Bautista‐Llamas","doi":"10.1111/nyas.15381","DOIUrl":"https://doi.org/10.1111/nyas.15381","url":null,"abstract":"Binocular vision function was assessed in individuals with type 1 diabetes (T1D) without retinopathy and compared to a control group to identify potential nonstrabismic binocular vision disorders. This cross‐sectional study included 80 participants (40 T1D, 40 controls) without systemic or ocular diseases, visual impairments, medications, or prior ocular surgery. Highly repeatable tests evaluated heterophoria, the accommodative convergence/accommodation (AC/A) ratio, near point of convergence (NPC), fusional vergences, vergence facility, and stereoacuity. Diagnosed dysfunctions included convergence insufficiency, divergence insufficiency, basic exophoria, basic esophoria, fusional vergence dysfunction, convergence excess, and divergence excess. Individuals with T1D showed significantly farther NPC (break: 5.50 vs. 3.80 cm, <jats:italic>p</jats:italic> = 0.005; recovery: 8.32 vs. 5.69 cm, <jats:italic>p</jats:italic> &lt; 0.001), lower near positive fusional vergence (break: 20.70 Δ vs. 24.25 Δ; recovery: 11.50 Δ vs. 14.75 Δ, <jats:italic>p</jats:italic> = 0.02 and 0.01, respectively), reduced vergence facility (5.10 vs. 7.15 cpm, <jats:italic>p</jats:italic> = 0.003), and a lower AC/A ratio (3.30 vs. 4.00, <jats:italic>p</jats:italic> = 0.01). More participants with T1D had binocular vision parameters outside the normal range, with a higher prevalence of binocular vision disorders (<jats:italic>p</jats:italic> = 0.048). These findings highlight the impact of T1D on binocular vision and emphasize the need for optometric evaluations for early detection and management.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"51 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Brazil climate highlights 2023 巴西气候突出2023年
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-15 DOI: 10.1111/nyas.15394
Luana Albertani Pampuch, Paola Gimenes Bueno, Michelle Simões Reboita, Ana Carolina Nóbile Tomaziello, Ana Maria Pereira Nunes, Andressa Andrade Cardoso, Caio A. S. Coelho, Camila Bertoletti Carpenedo, Francisco das Chagas Vasconcelos, Helber Barros Gomes, Henri Rossi Pinheiro, Hugo Alves Braga, Iuri Valério Graciano Borges, Maria de Souza Custodio, Maria Leidinice da Silva, Marta Llopart, Rosmeri Porfírio da Rocha, Tércio Ambrizzi, Gyrlene Aparecida Mendes da Silva
{"title":"Brazil climate highlights 2023","authors":"Luana Albertani Pampuch, Paola Gimenes Bueno, Michelle Simões Reboita, Ana Carolina Nóbile Tomaziello, Ana Maria Pereira Nunes, Andressa Andrade Cardoso, Caio A. S. Coelho, Camila Bertoletti Carpenedo, Francisco das Chagas Vasconcelos, Helber Barros Gomes, Henri Rossi Pinheiro, Hugo Alves Braga, Iuri Valério Graciano Borges, Maria de Souza Custodio, Maria Leidinice da Silva, Marta Llopart, Rosmeri Porfírio da Rocha, Tércio Ambrizzi, Gyrlene Aparecida Mendes da Silva","doi":"10.1111/nyas.15394","DOIUrl":"https://doi.org/10.1111/nyas.15394","url":null,"abstract":"In the year 2023, the Earth experienced the highest near‐surface temperature anomalies ever recorded until then. In addition, several extreme weather and climate events occurred around the world, including in Brazil. In this context, the primary objective of this study is to analyze the anomalous temperature and precipitation patterns observed in Brazil during 2023, along with the most significant extreme events. Different datasets and methodologies were applied. The north coast of the state of São Paulo had the highest accumulation of rainfall recorded in Brazil in a single day. September, October, and November 2023 experienced the large precipitation deficits over the Amazon region, leading to a very intense and prolonged drought. The south of Brazil was affected by a large amount of precipitation in a short time, associated with cyclones, resulting in fatalities and economic losses. Southeast and Central‐West Brazil experienced two intense heatwaves in the austral spring, breaking daily temperature records in major cities like São Paulo and Rio de Janeiro. Overall, this study describes the main physical processes responsible for these extremes, along with the socioenvironmental impacts caused by most of them.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"13 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144296061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Accelerando and crescendo in African penguin ecstatic display songs 加速和渐强的非洲企鹅欣喜若狂的展示歌曲
IF 5.2 3区 综合性期刊
Annals of the New York Academy of Sciences Pub Date : 2025-06-13 DOI: 10.1111/nyas.15383
Taylor A. Hersh, Yannick Jadoul, Marco Gamba, Andrea Ravignani, Livio Favaro
{"title":"Accelerando and crescendo in African penguin ecstatic display songs","authors":"Taylor A. Hersh, Yannick Jadoul, Marco Gamba, Andrea Ravignani, Livio Favaro","doi":"10.1111/nyas.15383","DOIUrl":"https://doi.org/10.1111/nyas.15383","url":null,"abstract":"Many species produce rhythmic sound sequences. Some purportedly speed up their vocalizations throughout a display, reminiscent of—but not necessarily equivalent to—<i>accelerando</i> in human music. This phenomenon has been frequently reported but rarely quantified, which limits our ability to understand its mechanism, function, and evolution. Here, we use a suite of rhythm analyses to quantify temporal and acoustic features in the ecstatic display songs of male African penguins (<i>Spheniscus demersus</i>). We show that songs get faster (i.e., accelerando) and louder (i.e., crescendo) as they progress. The accelerando occurs because the intersyllable silences, not the syllables themselves, predictably shorten over time. This rhythmicity is maintained even when individuals take audible breaths. Individuals also show plasticity: when they start with a slow tempo, they speed up more strongly than when they start with a fast tempo. We hypothesize that this well-timed accelerando may stem from arousal-based mechanisms, biomechanical constraints, or more complex rhythmic control. Future work should test the mechanisms behind this intra-individual rhythmic variation since nonpasserine birds are thought to have limited vocal plasticity. By integrating a rich empirical dataset with cutting-edge rhythm analyses, we establish the necessary foundation to determine how such features evolved and their role(s) across communication systems.","PeriodicalId":8250,"journal":{"name":"Annals of the New York Academy of Sciences","volume":"12 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144278574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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