Results 21 to 30 of about 287,859 (265)

Brain scaling in mammalian evolution as a consequence of concerted and mosaic changes in numbers of neurons and average neuronal cell size

Frontiers in Neuroanatomy, 2014
Enough species have now been subject to systematic quantitative analysis of the relationship between the morphology and cellular composition of their brain that patterns begin to emerge and shed light on the evolutionary path that led to mammalian brain ...
Suzana eHerculano-Houzel, Paul eManger, Jon H Kaas   +2 more
doaj   +1 more source

The elephant brain in numbers

Frontiers in Neuroanatomy, 2014
What explains the superior cognitive abilities of the human brain compared to other, larger brains? Here we investigate the possibility that the human brain has a larger number of neurons than even larger brains by determining the cellular composition of
Suzana eHerculano-Houzel, Kamilla eAvelino, Kleber eNeves, Jairo ePorfirio, Debora eMesseder, Larissa eMattos Feijó, José eMaldonado, Paul eManger   +7 more
doaj   +1 more source

When larger brains do not have more neurons: Increased numbers of cells are compensated by decreased average cell size across mouse individuals

Frontiers in Neuroanatomy, 2015
There is a strong trend toward increased brain size in mammalian evolution, with larger brains composed of more and larger neurons than smaller brains across species within each mammalian order.
Suzana eHerculano-Houzel, Débora Jardim Messeder, Karina eFonseca-Azevedo, Nilma Araújo Pantoja   +3 more
doaj   +1 more source

Adult-born proopiomelanocortin neurons derived from Rax-expressing precursors mitigate the metabolic effects of congenital hypothalamic proopiomelanocortin deficiency

Molecular Metabolism, 2021
Objective: Proopiomelanocortin (POMC) neurons of the hypothalamic arcuate nucleus are essential regulators of energy balance. Selective loss of POMC production in these cells results in extreme obesity and metabolic comorbidities.
Surbhi, Gábor Wittmann, Malcolm J. Low, Ronald M. Lechan   +3 more
doaj   +1 more source

Calcitriol imparts neuroprotection in vitro to midbrain dopaminergic neurons by upregulating GDNF expression.

PLoS ONE, 2013
During development a tightly controlled signaling cascade dictates the differentiation, maturation and survival of developing neurons. Understanding this signaling mechanism is important for developing therapies for neurodegenerative illnesses.
Rowan P Orme, Manminder S Bhangal, Rosemary A Fricker   +2 more
doaj   +1 more source

Estimating the number of neurons in multi-neuronal spike trains

The Annals of Applied Statistics, 2011
Published in at http://dx.doi.org/10.1214/10-AOAS371 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Li, M., Loh, W.-L.
openaire   +3 more sources

NEUROANATOMICAL ASSOCIATION OF HYPOTHALAMIC HSD2-CONTAINING NEURONS WITH ERα, CATECHOLAMINES, OR OXYTOCIN: IMPLICATIONS FOR FEEDING?

Frontiers in Systems Neuroscience, 2015
This study used immunohistochemical methods to investigate the possibility that hypothalamic neurons that contain 11-β-hydroxysteroid dehydrogenase type 2 (HSD2) are involved in the control of feeding by rats via neuroanatomical associations with the α ...
Maegan L. Askew, Halie D. Huckelrath, Jonathon R. Johnston, Kathleen S. Curtis   +3 more
doaj   +1 more source

Scaling of sensory information in large neural populations shows signatures of information-limiting correlations

Nature Communications, 2021
Information regarding a sensory stimulus is distributed in activity of neuronal populations. Here the authors show stimulus information scales sub-linearly with the number of neurons in mouse visual cortex due to correlated noise and may saturate in far ...
MohammadMehdi Kafashan, Anna W. Jaffe, Selmaan N. Chettih, Ramon Nogueira, Iñigo Arandia-Romero, Christopher D. Harvey, Rubén Moreno-Bote, Jan Drugowitsch   +7 more
doaj   +1 more source

Number neurons in the nidopallium of young domestic chicks [PDF]

Proceedings of the National Academy of Sciences, 2022
Abstract Numerical cognition is ubiquitous in the animal kingdom. Domestic chicks are a widely used developmental model for studying numerical cognition. Soon after hatching, chicks can perform sophisticated numerical tasks. Nevertheless, the neural basis of their numerical abilities has remained unknown. Here, we describe for the first
Kobylkov, Dmitry, Mayer, Uwe, Zanon, Mirko, Vallortigara, Giorgio   +3 more
openaire   +3 more sources

Distribution of neuropeptide Y in the brain of the male native Thai chicken

Folia Histochemica et Cytobiologica, 2022
INTRODUCTION: Neuropeptide Y (NPY), a 36 amino acid neurotransmitter/neuromodulator, is involved in food intake and parental cares in birds. NPY is associated with the regulation of the reproductive system in the female native Thai chickens. However, the
Boonyarit Kamkrathok, Yupaporn Chaiseha
doaj   +1 more source