Journal of Experimental Biology最新文献_第8页

Torque limitations on cantilevering in Dendrelaphis snakes. 悬挑蛇的扭矩限制。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-28 DOI: 10.1242/jeb.251396

Mal Graham, Henry C Astley, Christofer J Clemente, John J Socha

{"title":"Torque limitations on cantilevering in Dendrelaphis snakes.","authors":"Mal Graham, Henry C Astley, Christofer J Clemente, John J Socha","doi":"10.1242/jeb.251396","DOIUrl":"10.1242/jeb.251396","url":null,"abstract":"Arboreal animals face potentially substantial torques when reaching across gaps, which may limit the size of the gap they can cross with non-dynamic behaviors. Snakes can experience particularly large torques during gap crossing, because they must counteract both pitching and buckling torques while extending into the gap in a cantilever-like posture. Pitching and buckling limits may impose different constraints on gap-crossing locomotion, but their relative importance remains unclear. To investigate this problem, we analyzed kinematic and morphological data related to gap crossing in Dendrelaphis snakes, complemented by data from their sister taxon, Chrysopelea, to test predictions from a theoretical model of cantilever failure. Specifically, we evaluated whether the existing model of buckling predicts maximum observed cantilever performance in these snakes, and compared those predictions with pitching limits estimated from body mass distributions. The buckling model produced estimates far below observed cantilever extents, even across plausible ranges of tendon ratio and multi-articular span, indicating that the current model does not yet capture the mechanics of buckling in cantilevering snakes. By contrast, snakes switched to dynamic movements close to their theoretical pitching limit, supporting the idea that pitching torques constrain cantilever abilities. These results suggest that pitching torque is a major constraint on cantilever-based gap crossing, while also identifying the need for improved buckling models with higher anatomical fidelity. More broadly, this study shows how testing mechanical models against behavior can reveal both the limits shaping locomotor performance and the limitations of existing models.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148562077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neural substrates and neuroendocrine mechanisms underlying neophobia in vertebrates. 脊椎动物恐新症的神经基质和神经内分泌机制。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-20 DOI: 10.1242/jeb.252409

Marquise S Henry, Michael B Wilson, Christine R Lattin

{"title":"Neural substrates and neuroendocrine mechanisms underlying neophobia in vertebrates.","authors":"Marquise S Henry, Michael B Wilson, Christine R Lattin","doi":"10.1242/jeb.252409","DOIUrl":"https://doi.org/10.1242/jeb.252409","url":null,"abstract":"Neophobia, the avoidance of novel stimuli, is a widespread and ecologically relevant behavior observed across vertebrates and invertebrates. It is important for survival and adaptability, affecting how individuals navigate and use their environments. Neophobia might decrease an organism's exploitation of novel resources, but it also provides protection from potential dangers. Neophobia has been extensively studied in ecological and biomedical contexts, yet these two fields differ in their experimental paradigms, focal species and research goals. This Review uses a systematic approach to clarify the relationships between various 'neophobias' and the neural mechanisms that mediate them in vertebrates. Most vertebrate work focuses on mammals and, to a lesser extent, birds. In mammals and birds, both the hippocampus and amygdala (in birds, the medial ventral arcopallium) play a role in novelty evaluation and decision-making processes. In mammals, especially in the context of taste, food and odor neophobia, the insular and gustatory cortices also play a critical role. Serotonin, dopamine, glutamate, noradrenaline (norepinephrine) and glucocorticoids all exhibit context-, species- and life stage-dependent effects on neophobia. Fewer studies have examined immune or genetic mechanisms, and non-mammalian vertebrates are understudied relative to laboratory-bred rodents. In this Review, we also highlight persistent inconsistencies in how neophobia is defined and measured, emphasizing the need to distinguish it from neophilia and anxiety-related behaviors. Overall, this Review reveals both common mechanistic themes and major taxonomic and methodological gaps. We conclude by outlining key directions for future research, including broader comparative approaches and greater integration of ecological context into mechanistic studies of neophobia.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":"229 16","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148794027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Xenohormesis demystified: consuming heat-acclimated algae improves heat tolerance and longevity of Daphnia magna. 异温虫揭密：食用热驯化藻类可提高水蚤的耐热性和寿命。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-21 DOI: 10.1242/jeb.252354

Ashit Kumar Dutta, Dominik Martin-Creuzburg, Christopher Campbell, Lev Y Yampolsky

{"title":"Xenohormesis demystified: consuming heat-acclimated algae improves heat tolerance and longevity of Daphnia magna.","authors":"Ashit Kumar Dutta, Dominik Martin-Creuzburg, Christopher Campbell, Lev Y Yampolsky","doi":"10.1242/jeb.252354","DOIUrl":"10.1242/jeb.252354","url":null,"abstract":"The xenohormesis hypothesis states that consuming stress-exposed food organisms can increase the consumer's tolerance to similar stresses. We tested this hypothesis using the freshwater model herbivore Daphnia magna feeding on the microalga Nannochloropsis limnetica grown at either 25°C (heat stressed), 20°C (presumed optimum) or 12°C (cold stressed). Daphnia magna maintained at either 20°C or 28°C and consuming heat-stressed algae had a significantly higher short-term heat tolerance. Furthermore, D. magna kept at either 12°C or 28°C (but not at 20°C) achieved a significantly higher lifespan when feeding on heat-stressed algae compared with D. magna feeding on non-stressed or cold-stressed algae, with fecundity being higher on cold-stressed food. This was accompanied by higher antioxidant capacity in D. magna fed heat-stressed algae, but no differences in lipid peroxidation were observed. Fatty acid analysis revealed that D. magna fed heat-stressed algae contained significantly lower levels of the essential polyunsaturated fatty acid (PUFA) eicosapentaenoic acid (EPA), which is thought to be particularly susceptible to lipid peroxidation, than their counterparts feeding on algae grown at 20°C. We conclude that the lower EPA level in D. magna fed heat-stressed algae has caused the higher heat tolerance in D. magna by altering PUFA-mediated membrane properties, i.e. increasing membrane rigidity. Our findings suggest that the consumption of heat-stressed algae can provide heat tolerance and lifespan benefits in zooplankton, but at the cost of reduced fecundity. Further studies are needed to better understand the influence of heat waves on trophic interaction at the phytoplankton-zooplankton interface.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148562128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exogenous evening melatonin mitigates the negative impact of night-time light pollution on sleep and metabolism in both sexes of diurnal zebra finches. 外源性夜间褪黑素减轻了夜间光污染对雌雄斑胸草雀睡眠和代谢的负面影响。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-21 DOI: 10.1242/jeb.252506

Amaan Buniyaadi, Ashwani Kumar, Sanjay Kumar Bhardwaj, Vinod Kumar

{"title":"Exogenous evening melatonin mitigates the negative impact of night-time light pollution on sleep and metabolism in both sexes of diurnal zebra finches.","authors":"Amaan Buniyaadi, Ashwani Kumar, Sanjay Kumar Bhardwaj, Vinod Kumar","doi":"10.1242/jeb.252506","DOIUrl":"10.1242/jeb.252506","url":null,"abstract":"Artificial dim light at night (dLAN) depresses the nocturnal melatonin peak, along with disruption to sleep and metabolism. This study asked whether exogenous melatonin administration could reverse the effects of dim light at night on sleep and metabolism in a diurnal songbird. To answer this, three groups of zebra finches (Taeniopygia guttata) of both sexes (n=6/group/sex) hatched and raised in our indoor aviary were used. While one group remained on the dark night (LD control; 12 h light:12 h dark, light 150 lx, dark 0 lx), as before, for the other two groups the 12 h dark night was replaced with 5 lx (equivalent to 0.048 W m-2) dim light (dLAN treatment; 12 h light:12 h dLAN). Half an hour before dark onset, consecutively for the next 11 days, the birds of one dLAN group received subcutaneous injections of melatonin (10 μg 100 μl-1 vehicle), while those of the other dLAN group and the LD group (controls) received 100 μl vehicle alone. Exogenous melatonin mitigated dLAN-induced disruptive effects on both nocturnal sleep and metabolism. As compared with the LD and vehicle-treated control birds, melatonin-treated birds showed a significantly reduced nocturnal sleep frequency (fewer awakenings) and longer sleep bout as well as reduced night-time feeding and body fattening, and restoration of normal hepatic expression of genes associated with glucose and lipid metabolism. In particular, the elevated melatonin levels prevented the midnight increase in expression of g6pc, irs1, fasn, star and egr1, and augmented the sirt1 mRNA levels under the dLAN environment. These results suggest that nocturnal melatonin levels are a crucial component of the regulatory pathways underlying nocturnal sleep and metabolism, independent of sex, in a diurnal songbird species.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148604050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of wingbeat kinematics and muscle size on maximum flight speed in hummingbirds. 翅拍运动学和肌肉大小对蜂鸟最大飞行速度的影响。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-21 DOI: 10.1242/jeb.251012

Nadje A Najar, Sean C Wilcox, Leanna R Fernandez, Christopher J Clark

{"title":"Effects of wingbeat kinematics and muscle size on maximum flight speed in hummingbirds.","authors":"Nadje A Najar, Sean C Wilcox, Leanna R Fernandez, Christopher J Clark","doi":"10.1242/jeb.251012","DOIUrl":"10.1242/jeb.251012","url":null,"abstract":"Flight speed has important fitness consequences for flying animals, but how the parts of the flight apparatus limit top speed remains unknown. Morphology, kinematics and flight performance are strongly correlated with species and sex class, which complicates attempts to dissect the contribution of each element to flight performance. We performed two experiments to assess how sexual dimorphism within a species and morphological variation between species influence maximum flight speed. Burst capacity is often hypothesized to be representative of generalized flight performance and may be correlated with top speed. In experiment one, we found top speed and burst capacity were negatively correlated in female but not male Archilochus alexandri. In experiment two, we used path analysis to disentangle the relative contributions of muscle size and wingbeat kinematics on maximum flight speed in both sexes of four species: A. alexandri, Calypte anna, Calypte costae and Selasphorus sasin. Considered separately, muscle size was more strongly associated with variation in both flight speed and burst capacity compared with wingtip velocity. In a post hoc model comparing muscle size and wingbeat kinematics, only muscle size remained a significant predictor for both assays, but substantial variance in top speed remains unexplained. There was no significant correlation between flight speed and burst capacity despite sex-specific differences, suggesting flight muscle composition may be an important predictor of performance for a given flight assay. Overall, top speed and burst capacity represent uncorrelated measures of flight 'performance', and significant predictors of flight speed remain unexplored.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13539427/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148455977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plasticity and evolved changes in mitochondrial physiology across skeletal muscles of high-altitude deer mice (Peromyscus maniculatus). 高海拔鹿鼠骨骼肌线粒体生理学的可塑性和进化变化。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-24 DOI: 10.1242/jeb.252523

Ranim Saleem, Samuel G Robichaud, Simon G Lamarre, Jay F Storz, Graham R Scott

{"title":"Plasticity and evolved changes in mitochondrial physiology across skeletal muscles of high-altitude deer mice (Peromyscus maniculatus).","authors":"Ranim Saleem, Samuel G Robichaud, Simon G Lamarre, Jay F Storz, Graham R Scott","doi":"10.1242/jeb.252523","DOIUrl":"10.1242/jeb.252523","url":null,"abstract":"Small mammals at high altitude face the challenge of maintaining high rates of thermogenesis to cope with cold temperatures despite low O2 availability to fuel aerobic metabolism. We examined how adjustments in mitochondrial physiology across skeletal muscles might help overcome this challenge in deer mice (Peromyscus maniculatus) native to high altitude. Mice from high- and low-altitude populations were born and raised in captivity, and adults were acclimated to warm normoxia or cold (5°C) hypoxia (∼12 kPa O2 for 6-8 weeks) in a full-factorial design. Mitochondrial respiration and reactive oxygen species (ROS) emission were measured in the diaphragm, vastus medialis, vastus lateralis and gluteus maximus, complemented by measurements of mitochondrial abundance by transmission electron microscopy. In general, acclimation to cold hypoxia increased mitochondrial volume density (in some cases due to a preferential enrichment of subsarcolemmal mitochondria), mitochondrial respiration and/or complex IV activity, and also reduced ROS emission (measured both ex vivo and in vivo) in multiple muscles. Overlaid upon these effects of acclimation, high-altitude mice exhibited greater mitochondrial respiratory capacity than low-altitude mice in the diaphragm, and greater respiratory capacity of complex IV in all muscles except the gluteus maximus. High-altitude mice also exhibited lower ROS emission or more pronounced reductions in ROS emission in some conditions. These findings suggest that plastic and evolved changes in mitochondrial physiology can help improve energy supply and mitigate oxidative stress in small mammals at high altitude.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13571813/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148604025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrodynamic effects of spines on zooplankton: how horns and tails alter flow and forces on barnacle nauplii. 刺对浮游动物的流体动力学影响：角和尾巴如何改变对藤壶的流动和力。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-24 DOI: 10.1242/jeb.252318

Will M Ballentine, Kit Yu Karen Chan, Esther Wong, Jin Yung Wong, Mimi A R Koehl

{"title":"Hydrodynamic effects of spines on zooplankton: how horns and tails alter flow and forces on barnacle nauplii.","authors":"Will M Ballentine, Kit Yu Karen Chan, Esther Wong, Jin Yung Wong, Mimi A R Koehl","doi":"10.1242/jeb.252318","DOIUrl":"10.1242/jeb.252318","url":null,"abstract":"Many planktonic animals have body extensions (spines) that could affect the hydrodynamic performance of ecologically important functions. Because crustacean naupliar larvae have a wide range of spine morphologies, they provide useful model systems to study spine hydrodynamics. Here, we focus on nauplii with long anterior (horns) and posterior (tail) spines: the feeding nauplii of common flotsam-dwelling barnacles, Lepas anserifera, which have a long pelagic larval duration. We investigated the hydrodynamic consequences of anterior and posterior spines using dynamically similar physical models of these nauplii with horns and tails that could be removed. Models were towed through a viscous fluid at speeds to match the Reynolds numbers of locomoting and feeding L. anserifera nauplii. Hydrodynamic forces and torques on the models were measured, and particle image velocimetry (PIV) was used to quantify flow velocity fields around them. We found that both horns and tail spines increase drag, which resists swimming. However, they improve stability by counteracting the moments generated by beating appendages. Additionally, spines prolong the residence time of food-carrying water parcels near the particle-capture region of a nauplius, which is likely to improve feeding performance. These findings highlight the trade-offs between the performance of different ecological functions, such as swimming versus feeding, that can exert selective pressures on morphology.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148436900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low cost of shifting flight altitude in migrating great snipes. 大鹬迁徙时改变飞行高度的低成本。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-27 DOI: 10.1242/jeb.252022

Jesper E Brodersen, Åke Lindström, Thomas Alerstam, Arne Andersson, Johan Bäckman, Anders Hedenström, Julia Weber, Sissel Sjöberg

{"title":"Low cost of shifting flight altitude in migrating great snipes.","authors":"Jesper E Brodersen, Åke Lindström, Thomas Alerstam, Arne Andersson, Johan Bäckman, Anders Hedenström, Julia Weber, Sissel Sjöberg","doi":"10.1242/jeb.252022","DOIUrl":"10.1242/jeb.252022","url":null,"abstract":"Many birds make migratory flights lasting several days. Migrants do not only repeatedly make small-scale shifts in altitude; some of them also climb and sink several thousand metres in a diel cycle. This is a seemingly energetically costly behaviour, adding to an already high energetic cost of flight. Here, we describe the climbing and sinking behaviour of migratory great snipes, Gallinago media, and discuss whether their diel altitude cycle could represent an additional energy cost to their migration. Making use of tracking data from multisensor data loggers, we quantified altitude variation and compared climb and sink rates from non-stop migratory flights lasting up to 4 days (84 h). In general, great snipes climb and sink at comparatively slow rates, averaging 0.21 m s-1 and -0.22 m s-1, respectively, almost invariably within ±0.7 m s-1, and hardly ever close to a theoretical maximum climb rate of 1.8 m s-1. Great snipes do not climb faster at night than in the day and climb and sink rates are similarly low for all long non-stop flights. The additional cost of shifting flight altitude for great snipes is apparently negligible compared with the cost of forward flight (<1%). This is largely explained by the birds flapping during a slow descent, thereby turning most of the potential energy built up during previous climbs into aerodynamic work. We conclude that the overall cost of shifting flight is probably low for most migratory birds, given that climb and sink rates are low.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13571815/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148562036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Striatal network coordination tracks option value during probabilistic choice in pigeons. 纹状体网络协调跟踪鸽子概率选择中的选项值。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-20 DOI: 10.1242/jeb.252574

Lifang Yang, Zhihui Li, Jiajia Li, Long Yang, Wenbo Xu, Mengmeng Li, Zhigang Shang

{"title":"Striatal network coordination tracks option value during probabilistic choice in pigeons.","authors":"Lifang Yang, Zhihui Li, Jiajia Li, Long Yang, Wenbo Xu, Mengmeng Li, Zhigang Shang","doi":"10.1242/jeb.252574","DOIUrl":"10.1242/jeb.252574","url":null,"abstract":"Animals making decisions under uncertainty must use learned value estimates to distinguish advantageous from disadvantageous options. In mammals, the striatum is a key substrate for value-related processing, but whether analogous network-level dynamics are present in birds remains unclear. Here, we recorded 16-channel local field potentials (LFPs) from the striatum of six pigeons performing a probabilistic two-choice task and combined these recordings with computational modeling of behavior. Across training, pigeons increasingly favored the advantageous option. Dynamic model comparison further showed that choice strategy changed across learning, from an early reliance on immediate feedback to a later pattern better captured by Rescorla-Wagner reinforcement-learning (RW-RL) value updating. Using trial-by-trial phase-locking values (PLVs) to construct weighted striatal functional networks, we found that PLV-based network coordination increased with learning and was selectively associated with the RW-RL-estimated value of the higher-payoff option, with the strongest effects in the gamma band (30-80 Hz). Within trials, network coordination evolved from the pre-choice period to the outcome period and was differentially modulated by both choice (S+ versus S-) and reward feedback. Together, these findings suggest that avian striatal LFP network dynamics are linked to learned option value and value-guided choice, and provide comparative evidence that the avian striatum may exhibit network-level dynamics that are functionally analogous, but not necessarily identical, to aspects of mammalian striatal processing.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148520563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal buffering in a sessile insect herbivore. 无根食草昆虫的热缓冲作用。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-08-15 Epub Date: 2026-08-13 DOI: 10.1242/jeb.252214

Austin R Cruz, Judith L Bronstein, Goggy Davidowitz

引用次数: 0