background preloader

Robert Sapolsky: The uniqueness of humans

Robert Sapolsky: The uniqueness of humans

http://www.ted.com/talks/robert_sapolsky_the_uniqueness_of_humans.html

Related:  Discover LifeNeurologie

Smithsonian X 3D Bien-être mental - Les 6 super-neurotransmetteurs de votre cerveau Pour savoir comment des molécules peuvent agir sur la vigilance, le souvenir, le sentiment de bien-être ou le stress, une petite visite du cerveau s’impose. Pour comprendre pourquoi certaines opérations du cerveau s’émoussent avec le temps, un petit tour au sein des cellules est indispensable. Les neurones Le cerveau est isolé du reste du corps par une enveloppe qu’on appelle barrière hémo-méningée. Elle est très sélective, et ne laisse pas n’importe quelle substance accéder au cerveau.

Tame Theory: Did Bonobos Domesticate Themselves? Time and again humans have domesticated wild animals, producing tame individuals with softer appearances and more docile temperaments, such as dogs and guinea pigs. But a new study suggests that one of our primate cousins—the African ape known as the bonobo—did something similar without human involvement. It domesticated itself.

Sérotonine Un article de Wikipédia, l'encyclopédie libre. Elle est majoritairement présente dans l'organisme en qualité d'autacoïde. Sa part dans le cerveau où elle joue le rôle de neurotransmetteur ne représente que 1 % du total présent dans le corps[3], mais elle y joue un rôle essentiel[4]. Elle est impliquée dans la régulation du cycle circadien[5] dans le noyau suprachiasmatique (siège de l'horloge circadienne), dans l'hémostase, dans la mobilité digestive et « dans divers désordres psychiatriques tels que stress, anxiété, phobies, dépression ». Il est ainsi la cible de certains outils thérapeutiques utilisés pour soigner ces maladies mais il est aussi celle de produits toxiques qui en modifient l'activité (par exemple l'ecstasy)[4]. Histoire[modifier | modifier le code]

Extinct Genome From Fossil Finger Posted Online Researchers in Germany today posted the first high-resolution version of an extinct human's genome on the Web site for the Max Planck Institute for Evolutionary Anthropology. The goal: to allow colleagues to download the most complete sequence data available for free. A year ago, researchers published the first rough draft of the genome of an archaic girl who lived in Denisova Cave, Siberia, at least 30,000 years ago. In January, Max Planck paleogeneticist Svante Pääbo was at a meeting in Sweden when he realized that researchers in other labs were poring over year-old sequence data that was far less complete than what his colleagues had obtained in the lab in the past year using sensitive, new methods to sequence ancient DNA.

Hémisphère gauche, droit Ceci est le premier article d’une série sur la créativité, un des thèmes récurrents du développement personnel. Et pour bien comprendre le processus de génération d’idées, nous allons nous pencher d’abord sur le fonctionnement du cerveau. Une des caractéristiques remarquable du cerveau est l’antagonisme entre ses deux hémisphères. Chacun est spécialisé dans son propre style de pensée et possède des facultés bien particulières, que nous allons explorer. L’hémisphère gauche L’hémisphère gauche du cerveau est associé à la logique, au langage et à la pensée analytique. How Humans Became Social Look around and it's impossible to miss the importance of social interactions to human society. They form the basis of our families, our governments, and even our global economy. But how did we become social in the first place? Researchers have long believed that it was a gradual process, evolving from couples to clans to larger communities. A new analysis, however, indicates that primate societies expanded in a burst, most likely because there was safety in numbers. It's a controversial idea, admits anthropologist and study author Susanne Shultz of the University of Oxford in the United Kingdom.

List of thought processes Nature of thought[edit] Thought (or thinking) can be described as all of the following: An activity taking place in a: brain – organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals (only a few invertebrates such as sponges, jellyfish, adult sea squirts and starfish do not have a brain). It is the physical structure associated with the mind. mind – abstract entity with the cognitive faculties of consciousness, perception, thinking, judgement, and memory. Having a mind is a characteristic of humans, but which also may apply to other life forms.[1][2] Activities taking place in a mind are called mental processes or cognitive functions.computer (see automated reasoning, below) – general purpose device that can be programmed to carry out a set of arithmetic or logical operations automatically. Types of thoughts[edit]

Late Bloomers: "New" Genes May Have Played a Role in Human Brain Evolution Billions of years ago, organic chemicals in the primordial soup somehow organized themselves into the first organisms. A few years ago scientists found that something similar happens every once in awhile in the cells of all living things: bits of once-quiet stretches of DNA sometimes spontaneously assemble themselves into genes. Such "de novo" genes may go on to play significant roles in the evolution of individual organisms—even humans. But how many are there?

Robert es un gran cientifico y un gran orador ... by leclercfl Jan 17

a great talk about what make us human and really special from other animals by leclercfl Jan 15

Related:  Our WorldVideos 1 - La race humaineTED