Accurate navigation to a desired goal requires consecutive estimates of spatial relationships between the current position and future destination throughout the journey. Although neurons in the hippocampal formation can represent the position of an animal as well as its nearby trajectories, their role in determining the destination of the animal has been questioned. It is, thus, unclear whether the brain can possess a precise estimate of target location during active environmental exploration. Here we describe neurons in the rat orbitofrontal cortex (OFC) that form spatial representations persistently pointing to the subsequent goal destination of an animal throughout navigation. This destination coding emerges before the onset of navigation, without direct sensory access to a distal goal, and even predicts the incorrect destination of an animal at the beginning of an error trial. Goal representations in the OFC are maintained by destination-specific neural ensemble dynamics, and their brief perturbation at the onset of a journey led to a navigational error. These findings suggest that the OFC is part of the internal goal map of the brain, enabling animals to navigate precisely to a chosen destination that is beyond the range of sensory perception.
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http://dx.doi.org/10.1038/s41586-021-04042-9 | DOI Listing |
Prev Vet Med
January 2025
Departamento de Medicina Veterinária, Faculdade de Zootecnia e Medicina Veterinária, Universidade Federal de Lavras, Caixa Postal 3037, Campus Universitário, Lavras, Minas Gerais 37200-900, Brazil. Electronic address:
The aim of this study was to characterize the movement among municipalities in Minas Gerais state, Brazil, and to perform a network analysis based on these movements. Data on cattle movement in Minas Gerais, Brazil, from January 2013 to August 2023 were acquired from Guia de Trânsito Animal (GTA) (Animal Transit Guide), mandatory in Brazil for all livestock movements, provided by Instituto Mineiro de Agropecuária (IMA) (State Animal Health Authority). Descriptive analysis was performed, the five most common municipalities that were the origin and destination of movements were described, and the reason for transportation was assessed.
View Article and Find Full Text PDFParasit Vectors
January 2025
Diptera Section, Zoological Survey of India, Kolkata, West Bengal, India.
Background: The detection of multiple bluetongue virus serotypes, increasing trend in livestock density, rich biological diversity with high endemism, and the status of the Andaman and Nicobar Islands as a popular tourist destination underscore the need for a faunistic survey of medically and veterinary significant vector species, specifically Culicoides, in this region. Moreover, scattered information on Indian Culicoides species complicates the planning and implementation of preventive measures for pathogens transmitted by these vectors. This study aims to provide the first comprehensive account of the Culicoides fauna in the Andaman and Nicobar Islands, India, along with an updated checklist of Indian Culicoides species and their state-wise distribution.
View Article and Find Full Text PDFNat Commun
January 2025
Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Cortical interneurons generated from ganglionic eminence via a long-distance journey of tangential migration display evident cellular and molecular differences across brain regions, which seeds the heterogeneous cortical circuitry in primates. However, whether such regional specifications in interneurons are intrinsically encoded or gained through interactions with the local milieu remains elusive. Here, we recruit 685,692 interneurons from cerebral cortex and subcortex including ganglionic eminence within the developing human and macaque species.
View Article and Find Full Text PDFIr Vet J
January 2025
Department of Biological and Pharmaceutical Sciences, Munster Technological University Kerry, Tralee, V92 CX88, Ireland.
Long-distance transport and associated fasting of unweaned calves have the potential to compromise the animals' welfare. This observational study aimed to determine how transport and fasting durations impacted the physiology and health of 115 transported calves in three transport groups; IRE (n = 20, mean age 29.8d; short road transport (~ 29 h incl.
View Article and Find Full Text PDFAm J Primatol
January 2025
Department of Anthropology, San Diego State University, San Diego, California, USA.
How group-living primates come to a consensus about navigating their environment is a result of their decision-making processes. Although decision-making has been examined in several primate taxa, it remains underexplored for primates living in anthropogenic landscapes. To shed light on consensus decision-making and flexibility in this process, we examined collective movement behavior in a group of wild moor macaques (Macaca maura) experiencing a risk-reward tradeoff as a result of roadside provisioning within Bantimurung Bulusaraung National Park in South Sulawesi, Indonesia.
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