Glutamate receptorGlutamate receptors are synaptic and non synaptic receptors located primarily on the membranes of neuronal and glial cells. Glutamate (the conjugate base of glutamic acid) is abundant in the human body, but particularly in the nervous system and especially prominent in the human brain where it is the body's most prominent neurotransmitter, the brain's main excitatory neurotransmitter, and also the precursor for GABA, the brain's main inhibitory neurotransmitter.
Intrinsically photosensitive retinal ganglion cellIntrinsically photosensitive retinal ganglion cells (ipRGCs), also called photosensitive retinal ganglion cells (pRGC), or melanopsin-containing retinal ganglion cells (mRGCs), are a type of neuron in the retina of the mammalian eye. The presence of (something like) ipRGCs was first suspected in 1927 when rodless, coneless mice still responded to a light stimulus through pupil constriction, This implied that rods and cones are not the only light-sensitive neurons in the retina.
Modification corporelleUne modification corporelle est une transformation, localisée ou étendue, réversible ou non, du corps d'un individu, au moyen d'une pratique et dans un but ayant un caractère culturel. Si des phénomènes naturels tels que la croissance, la grossesse, la vieillesse, ou certaines maladies, ou encore des traitements médicaux ou chirurgicaux entrainent des modifications du corps, l'expression est utilisée en anthropologie pour désigner plus spécifiquement les modifications corporelles artificielles, contrôlées et délibérées, excluant les mutilations punitives et les auto-mutilations relevant de troubles psychiatriques.
Aging brainAging of the brain is a process of transformation of the brain in older age, including changes all individuals experience and those of illness (including unrecognised illness). Usually this refers to humans. Since life extension is only pertinent if accompanied by health span extension, and, more importantly, by preserving brain health and cognition, finding rejuvenating approaches that act simultaneously in peripheral tissues and in brain function is a key strategy for development of rejuvenating technology.
Excitatory synapseAn excitatory synapse is a synapse in which an action potential in a presynaptic neuron increases the probability of an action potential occurring in a postsynaptic cell. Neurons form networks through which nerve impulses travels, each neuron often making numerous connections with other cells of neurons. These electrical signals may be excitatory or inhibitory, and, if the total of excitatory influences exceeds that of the inhibitory influences, the neuron will generate a new action potential at its axon hillock, thus transmitting the information to yet another cell.
Art corporelvignette|Peinture corporelle, par Oscar Korbla Mawuli Awuku. L'art corporel (appelé parfois body art pour qualifier un courant avant-gardiste) est un ensemble de pratiques et de dispositifs qui placent le langage du corps au centre d'un travail artistique. Dans certains cas, l'artiste fait de son corps une œuvre d'art à part entière. Les concepts entre autres de performance, d'installation et de contextualisation nourrissent ces créations qui transforment profondément l'art contemporain à partir des années 1950.
Frontotemporal dementiaFrontotemporal dementia (FTD), or frontotemporal degeneration disease, or frontotemporal neurocognitive disorder, encompasses several types of dementia involving the progressive degeneration of frontal and temporal lobes. FTDs broadly present as behavioral or language disorders with gradual onsets. Common signs and symptoms include significant changes in social and personal behavior, apathy, blunting of emotions, and deficits in both expressive and receptive language.
