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An axo-axonic synapse is a type of synapse, formed by one neuron projecting its axon terminals onto another neuron's axon. [1]Axo-axonic synapses have been found and described more recently than the other more familiar types of synapses, such as axo-dendritic synapses and axo-somatic synapses.
It is believed that they provide inhibitory input to the pyramidal neurons, but there is data showing that in some circumstances the GABA from chandelier neurons could be excitatory. [ 7 ] The axon cartridges formed by chandelier cells are one of the synapse types that show the most dramatic changes during normal adolescence, [ 8 ] and could ...
Diagram of a chemical synaptic connection. In the nervous system, a synapse [1] is a structure that allows a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron or a target effector cell.
Presynaptic inhibition is a phenomenon in which an inhibitory neuron provides synaptic input to the axon of another neuron (axo-axonal synapse) to make it less likely to fire an action potential. Presynaptic inhibition occurs when an inhibitory neurotransmitter, like GABA , acts on GABA receptors on the axon terminal .
Synaptic gating is the ability of neural circuits to gate inputs by either suppressing or facilitating specific synaptic activity. Selective inhibition of certain synapses has been studied thoroughly (see Gate theory of pain ), and recent studies have supported the existence of permissively gated synaptic transmission.
Nationality: Spanish: Education: University of Zaragoza: Known for: Fathering modern neuroscience Discovery of the neuron Cajal body, Cajal–Retzius cell, Interstitial cell of Cajal, Neuron doctrine, Growth cone, Dendritic spine, Long-term potentiation, Mossy fiber, Neurotrophic theory, Axo-axonic synapse, Pioneer axon, Pyramidal cell, Radial glial cell, Retinal ganglion cell, Trisynaptic ...
The IBM 1402 was a high-speed card reader/punch introduced on October 5, 1959 as a peripheral input/output device for the IBM 1401 computer. It was later used with other computers of the IBM 1400 series and IBM 7000 series product lines.
A card reader is a data input device that reads data from a card-shaped storage medium and provides the data to a computer. Card readers can acquire data from a card via a number of methods, including: optical scanning of printed text or barcodes or holes on punched cards, electrical signals from connections made or interrupted by a card's punched holes or embedded circuitry, or electronic ...