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2-Minute Neuroscience: Caffeine
2-Minute Neuroscience: Caffeine
2-Minute Neuroscience: Caffeine
Pharmacology of Caffeine [1]
A service of the National Library of Medicine, National Institutes of Health.. Institute of Medicine (US) Committee on Military Nutrition Research
Washington (DC): National Academies Press (US); 2001.. Caffeine for the Sustainment of Mental Task Performance: Formulations for Military Operations.Show details
It has numerous pharmacological and physiological effects, including cardiovascular, respiratory, renal, and smooth muscle effects, as well as effects on mood, memory, alertness, and physical and cognitive performance. This chapter provides a brief summary of the metabolism and physiological effects of caffeine
Neurotransmitters: What To Know [2]
Your body functions using chemical messages that are directed throughout your system with specific targets. These chemical messages are carried by neurotransmitters, which act as a messenger directing messages from point A to point B
In addition, the messages passed along by neurotransmitters help to keep your heart beating.. Neurotransmitters are vital to your body’s ability to function
Your nervous system houses a wide network of nerves that work to send and receive messages throughout your body. As a result, your nervous system is responsible for controlling many of your bodily functions involving your mind, muscles, and various organs
Energy drinks and the neurophysiological impact of caffeine [3]
volume 5 – 2011 | https://doi.org/10.3389/fnins.2011.00116. Energy drinks and the neurophysiological impact of caffeine
Caffeine is the most widely used psychoactive stimulant with prevalent use across all age groups. It is a naturally occurring substance found in the coffee bean, tea leaf, the kola nut, cocoa bean
With caffeine consumption being so common, it is vital to know the impact caffeine has on the body, as its effects can influence cardio-respiratory, endocrine, and perhaps most importantly neurological systems. Detrimental effects have being described especially since an over consumption of caffeine has being noted
Caffeine-Induced Suppression of GABAergic Inhibition and Calcium-Independent Metaplasticity [4]
Caffeine-Induced Suppression of GABAergic Inhibition and Calcium-Independent Metaplasticity. GABAergic inhibition plays a critical role in the regulation of neuron excitability; thus, it is subject to modulations by many factors
Caffeine induces a release of calcium from intracellular stores. We tested whether caffeine modulated GABAergic transmission by increasing
Time course of suppression and the subsequent recovery of IPSCs resembled DSI (depolarization-induced suppression of inhibition), mediated by endogenous cannabinoids that require a rise. However, unlike DSI, caffeine-induced suppression of IPSCs (CSI) persisted in the absence of a rise
How does caffeine affect the body? [5]
Caffeine–the drug that gives coffee and cola its kick–has a number of physiological effects. At the cellular level, caffeine blocks the action of a chemical called phosphodiesterase (PDE)
Many hormones and neurotransmitters cannot cross the cell membrane, and so they exert their actions indirectly via such second messengers; when they bind to a receptor on the surface of a cell, it initiates a chemical chain reaction called an enzyme cascade that results in the formation of second messenger chemicals.. Historically, cAMP was the first second messenger ever described
The advantage of such a complex system is that an extracellular signal can be greatly amplified in the process, and so have a massive intracellular effect.. Thus, when caffeine stops the breakdown of cAMP, its effects are prolonged, and the response throughout the body is effectively amplified
Effects of caffeine on the electrophysiological, cognitive and motor responses of the central nervous system [6]
Caffeine is the most consumed psychoactive substance in the world. The effects of caffeine have been studied using cognitive and motor measures, quantitative electroencephalography (qEEG) and event-related potentials
The objective of the present study was to analyze changes in electrophysiological, cognitive and motor variables with the ingestion of caffeine, and to relate central to peripheral responses. For this purpose we recorded event-related potentials and eyes-closed, resting EEG, applied the Stroop test, and measured reaction time
A significant reduction of alpha absolute power over the entire scalp and of P300 latency at the Fz electrode were observed after caffeine ingestion. These results are consistent with a stimulatory effect of caffeine, although there was no change in the attention (Stroop) test or in reaction time
Neurotransmitter [7]
A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a synapse. The cell receiving the signal, or target cell, may be another neuron, but could also be a gland or muscle cell.[1]
The neurotransmitter’s effect on the target cell is determined by the receptor it binds to. Many neurotransmitters are synthesized from simple and plentiful precursors such as amino acids, which are readily available and often require a small number of biosynthetic steps for conversion.
The exact number of unique neurotransmitters in humans is unknown, but more than 100 have been identified.[2] Common neurotransmitters include glutamate, GABA, acetylcholine, glycine and norepinephrine.. Neurotransmitters are generally synthesized in neurons and are made up of, or derived from, precursor molecules that are found abundantly in the cell
How does caffeine work in your brain?- Examine [8]
Over the course of a day, you get sleepy as adenosine binds to A1 receptors in your brain. Caffeine blocks adenosine from binding, thus making you feel alert and also helping you feel better.
Despite widespread consumption, few people are actually aware of how caffeine works in the body.. We thought you might be interested in learning exactly how caffeine works in your body after you ingest it and it enters the brain.
Adenosine is a key that opens up a variety of locks, with the locks actually being receptors in the brain.. Once adenosine (the key) locks into a certain receptor (the lock) in the brain, it has a unique effect on the brain.
Sources
- https://www.ncbi.nlm.nih.gov/books/NBK223808/#:~:text=Caffeine’s%20stimulatory%20action%20on%20dopamine,which%20typically%20inhibits%20neuronal%20function.
- https://www.webmd.com/brain/neurotransmitters-what-to-know#:~:text=Norepinephrine%3A%20While%20norepinephrine%20is%20a,stress%20disorder%20and%20Parkinson’s%20disease.
- https://www.frontiersin.org/articles/10.3389%2Ffnins.2011.00116
- https://www.hindawi.com/journals/np/2016/1239629/
- https://www.scientificamerican.com/article/how-does-caffeine-affect/
- https://www.scielo.br/j/bjmbr/a/mGLm74NjKhzdSrYPBPZmJCy/?lang=en
- https://en.wikipedia.org/wiki/Neurotransmitter
- https://examine.com/categories/brain-health/faq/oJAv3le-how-does-caffeine-work-in-your-brain/
