Results 61 to 70 of about 22,805 (235)

Asymmetries in the Hippocampus and Amygdala of Chimpanzees (Pan troglodytes). [PDF]

Behavioral Neuroscience, 2004
Magnetic resonance imaging was used to measure the hippocampal and amygdalar volumes of 60 chimpanzees (Pan troglodytes). An asymmetry quotient (AQ) was then used to calculate the asymmetry for each of the structures. A one-sample t test indicated that there was a population-level right hemisphere asymmetry for the hippocampus. There was no significant
Hani D, Freeman, Claudio, Cantalupo, William D, Hopkins   +2 more
openaire   +2 more sources

Variable grouping patterns in primates: A test of the better competitor hypothesis in male Verreaux's sifaka (Propithecus verreauxi)

The Anatomical Record, EarlyView.
Abstract Intraspecific variation in social organization (IVSO) within primate populations can arise due to male mating competition. Verreaux's sifaka (Propithecus verreauxi) populations exhibit both single‐male and multi‐male groups, providing an opportunity to examine the relationship between male competitive ability and social organization.
Lemeng Li, Stacey R. Tecot, Rebecca J. Lewis   +2 more
wiley   +1 more source

Aging and sex affect soluble alpha klotho levels in bonobos and chimpanzees

Frontiers in Zoology, 2018
Background Throughout life, physiological homeostasis is challenged and the capacity to cope with such challenges declines with increasing age. In many species, sex differences exist in life expectancy.
V. Behringer, J. M. G. Stevens, T. Deschner, R. Sonnweber, G. Hohmann   +4 more
doaj   +1 more source

Flight of the dragons: a global review of migration in Odonata

Biological Reviews, EarlyView.
ABSTRACT Insects are the most abundant and ecologically important animal migrants. Yet, we know relatively little about the patterns and processes underlying insect migration. Dragonflies (Anisoptera) and damselflies (Zygoptera) comprise the ancient insect order Odonata, whose ancestors were the first organisms to fly on Earth.
Johanna S.U. Hedlund, Myles Menz, Jason W. Chapman, Alexander Hayward   +3 more
wiley   +1 more source

Intracranial arachnoid cysts in a chimpanzee (Pan troglodytes) [PDF]

Primates, 2013
An intracranial arachnoid cyst was detected in a 32-year-old, 44.6-kg, female chimpanzee at the Primate Research Institute, Kyoto University. Magnetic resonance imaging (MRI) and computed tomography (CT) were performed and the cognitive studies in which she participated were reviewed.
Miyabe-Nishiwaki, Takako, Kaneko, Takaaki, Sakai, Tomoko, Kaneko, Akihisa, Watanabe, Akino, Watanabe, Shohei, Maeda, Norihiko, Kumazaki, Kiyonori, Suzuki, Juri, Fujiwara, Reina, Makishima, Haruyuki, Nishimura, Takeshi, Hayashi, Misato, Tomonaga, Masaki, Matsuzawa, Tetsuro, Mikami, Akichika   +15 more
openaire   +2 more sources

Utterance evolution: the road to generative, combinatorial communicators

Biological Reviews, EarlyView.
ABSTRACT Language has long been considered uniquely complex in the animal kingdom; however, animal research over the last decade has begun to challenge some long‐standing premises about exactly which language capacities are uniquely human. The task of resolving why and how complex communication systems evolve, particularly human language, has ...
Catherine Crockford, Roman Martin Wittig, Cedric Girard‐Buttoz   +2 more
wiley   +1 more source

Animal empathy reconsidered: a multidimensional profile account

Biological Reviews, EarlyView.
ABSTRACT Empathy is the glue that holds societies together and yet several fundamental questions about empathy persist. What is empathy (the definitional question)? Is it uniquely human and, if not, which nonhuman animals possess empathy (the distribution question)? Which type or quality of empathy is realized in different species (the quality question)
Albert Newen, Maja Griem, Ludwig Huber, Thomas Bugnyar, Aaron Blaisdell, Simone Pika   +5 more
wiley   +1 more source

Development of Emotional Expressions in Chimpanzees (Pan troglodytes) [PDF]

Annals of the New York Academy of Sciences, 2003
Chimpanzee infants, like human infants, exhibit some emotional expressions in the first days of life, and additional expressions develop over the first months of life. We know relatively little about the influence of the rearing environment on the development of emotional expression in chimpanzees (or in human infants).
openaire   +3 more sources

The Learning Function of Evaluation: A Conceptual Framing

New Directions for Evaluation, EarlyView.
ABSTRACT In this article, we set out a conceptual overview of what we call learning in the evaluation ecosystem to depict the interplay between external influences, organizational and community factors, and learning levers (e.g. capacity building, systems thinking).
Jill Anne Chouinard, J. Bradley Cousins
wiley   +1 more source

Human biomarker navigator

iMeta, EarlyView.
The Human Biomarker Navigator integrates the disease continuum, biomarker dynamics, cross‐organ biomarker networks, biomarker classification, and technology‐driven paradigms. It maps how biomarkers link multi‐system physiology and pathology across the nervous, respiratory, endocrine, circulatory, immune, digestive, urinary, reproductive, and ...
Meng‐Yao Li, Qian Zhang, Zijie Wang, Zeping Gui, Jing Liu, Jingda Li, Maojun Jiang, Zukang Chang, Qingqing Han, Bendong Yang, Tariq Saeed, Jun Li, Jinghan Jia, Chenghu Song, Tong Shao, Tianhuan Peng, Xueying Zhang, Pingping Guo, Jun Luo, Gangao Yang, Yuan Wan, Gokhan Zengin, Quan Yuan, Lingru Li, Xiaohui Fan, Yang Luo, Lvyun Zhu, Yanfei Zheng, Wenjun Mao, Wenlong Sun   +29 more
wiley   +1 more source