中文版 | English

在结果中检索

GSTDTAP

浏览/检索结果: 共7条，第1-7条 帮助

限定条件        
已选(0)清除 条数/页：   排序方式：
Internal state dynamics shape brainwide activity and foraging behaviour 期刊论文
NATURE, 2020, 577 (7789) : 239-+
作者:  Marques, Joao C.;  Li, Meng;  Schaak, Diane;  Robson, Drew N.;  Li, Jennifer M.
收藏  |  浏览/下载：6/0  |  提交时间：2020/07/03

The brain has persistent internal states that can modulate every aspect of an animal'  s mental experience(1-4). In complex tasks such as foraging, the internal state is dynamic(5-8). Caenorhabditis elegans alternate between local search and global dispersal(5). Rodents and primates exhibit trade-offs between exploitation and exploration(6,7). However, fundamental questions remain about how persistent states are maintained in the brain, which upstream networks drive state transitions and how state-encoding neurons exert neuromodulatory effects on sensory perception and decision-making to govern appropriate behaviour. Here, using tracking microscopy to monitor whole-brain neuronal activity at cellular resolution in freely moving zebrafish larvae(9), we show that zebrafish spontaneously alternate between two persistent internal states during foraging for live prey (Paramecia). In the exploitation state, the animal inhibits locomotion and promotes hunting, generating small, localized trajectories. In the exploration state, the animal promotes locomotion and suppresses hunting, generating long-ranging trajectories that enhance spatial dispersion. We uncover a dorsal raphe subpopulation with persistent activity that robustly encodes the exploitation state. The exploitation-state-encoding neurons, together with a multimodal trigger network that is associated with state transitions, form a stochastically activated nonlinear dynamical system. The activity of this oscillatory network correlates with a global retuning of sensorimotor transformations during foraging that leads to marked changes in both the motivation to hunt for prey and the accuracy of motor sequences during hunting. This work reveals an important hidden variable that shapes the temporal structure of motivation and decision-making.


  
Network-based diffusion analysis reveals context-specific dominance of dance communication in foraging honeybees 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Hasenjager, Matthew J.;  Hoppitt, William;  Leadbeater, Ellouise
收藏  |  浏览/下载：0/0  |  提交时间：2020/05/13
Foraging plasticity allows a large herbivore to persist in a sheltering forest habitat: DNA metabarcoding diet analysis of the European bison 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2019, 449
作者:  Kowalczyk, Rafal;  Wojcik, Jan M.;  Taberlet, Pierre;  Kaminski, Tomasz;  Miquel, Christian;  Valentini, Alice;  Craine, Joseph M.;  Coissac, Eric
收藏  |  浏览/下载：9/0  |  提交时间：2019/11/27
Bialowieza Primeval Forest  Optimal foraging  Bison bonasus  Megaherbivores  Food niche  Foraging behaviour  Plant biomass  Habitat structure  Refugee species  
Experimentally manipulating light spectra reveals the importance of dark corridors for commuting bats 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (12) : 5909-5918
作者:  Zeale, Matt R. K.;  Stone, Emma L.;  Zeale, Emma;  Browne, William J.;  Harris, Stephen;  Jones, Gareth
收藏  |  浏览/下载：5/0  |  提交时间：2019/04/09
artificial light at night  bats  behaviour  dark corridors  Rhinolophus hipposideros  street lights  
Reproductive performance and diving behaviour share a common sea-ice concentration optimum in Adelie penguins (Pygoscelis adeliae) 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (11) : 5304-5317
作者:  Le Guen, Camille;  Kato, Akiko;  Raymond, Ben;  Barbraud, Christophe;  Beaulieu, Michael;  Bost, Charles-Andre;  Delord, Karine;  MacIntosh, Andrew J. J.;  Meyer, Xavier;  Raclot, Thierry;  Sumner, Michael;  Takahashi, Akinori;  Thiebot, Jean-Baptiste;  Ropert-Coudert, Yan
收藏  |  浏览/下载：13/0  |  提交时间：2019/04/09
Antarctic  breeding success  diving activity  foraging strategies  Pygoscelis adeliae  sea ice  
Increased autumn rainfall disrupts predator-prey interactions in fragmented boreal forests 期刊论文
GLOBAL CHANGE BIOLOGY, 2017, 23 (4)
作者:  Terraube, Julien;  Villers, Alexandre;  Poudre, Leo;  Varjonen, Rauno;  Korpimaki, Erkki
收藏  |  浏览/下载：2/0  |  提交时间：2019/04/09
body condition  climate change  diet shifts  Eurasian pygmy owl  foraging behaviour  habitat loss  intensive forestry practices  
Barren-ground caribou (Rangifer tarandus groenlandicus) behaviour after recent fire events; integrating caribou telemetry data with Landsat fire detection techniques 期刊论文
GLOBAL CHANGE BIOLOGY, 2017, 23 (3)
作者:  Rickbeil, Gregory J. M.;  Hermosilla, Txomin;  Coops, Nicholas C.;  White, Joanne C.;  Wulder, Michael A.
收藏  |  浏览/下载：5/0  |  提交时间：2019/04/09
arctic  disturbance  Landsat  mammal  movement  remote sensing  telemetry  ungulate