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Cocaine- and amphetamine-regulated transcript, also known as CART, is a neuropeptide protein that in humans is encoded by the CARTPT gene. [ 1 ] [ 2 ] CART appears to have roles in reward, feeding, and stress, [ 3 ] and it has the functional properties of an endogenous psychostimulant .
Cocaine addiction results from complex molecular changes in the brain following multiple exposures to cocaine. [16] Dynorphins have been shown to be an important part of this process. Although a single exposure to cocaine does not affect brain dynorphin levels, repeated exposures to the drug increases dynorphin concentrations in the striatum ...
Changes in the excitatory synaptic inputs into these neurons have been shown to be important in mediating addiction-related behaviors. [43] It has been shown that LTP and LTD occurs at NAc excitatory synapses. [44] Unlike the VTA, a single dose of cocaine induces no change in potentiation in the excitatory synapses of the NAc. [45]
Neuropharmacology is the study of how drugs affect function in the nervous system, and the neural mechanisms through which they influence behavior. [1] There are two main branches of neuropharmacology: behavioral and molecular.
Types of retinopathy caused by drug abuse include maculopathy, Saturday night retinopathy, and talc retinopathy. Common symptoms include temporary and permanent vision loss, blurred vision, and night blindness. Substances commonly associated with this condition include poppers, heroin, cocaine, methamphetamine, tobacco, and alcohol. [1]
Cocaine is one of the more common stimulants and is a complex drug that interacts with various neurotransmitter systems. It commonly causes heightened alertness, increased confidence, feelings of exhilaration, reduced fatigue, and a generalized sense of well-being.
Cocaine dependence is a neurological disorder that is characterized by withdrawal symptoms upon cessation from cocaine use. [1] It also often coincides with cocaine addiction which is a biopsychosocial disorder characterized by persistent use of cocaine and/or crack despite substantial harm and adverse consequences.
Other stimulants work by binding to the receptors of excitatory neurotransmitters (e.g., nicotine) or by blocking the activity of endogenous agents that promote sleep (e.g., caffeine). Stimulants can affect various functions, including arousal, attention, the reward system, learning, memory, and emotion.