Alerting Systems, The Awakening of the Brain
Alerting: The Awakening of the Brain
Alerting signals can massively modulate learning. ==Neuromodulators such as Serotonin, Acetylcholine (ACh), and Dopamine, whose signals are broadcast to much of the cortex, tell us when to pay attention and seem to force the brain to learn==. In the experiment shown at the bottom, rats listened to a nine-kilohertz sound which was associated with an electrical stimulation of the basal nucleus of Meynert, thus triggering the release of acetylcholine in the cortex. After a few days of exposure, the entire A1 Auditory Cortex was invaded by this sound frequency and its neighbors (regions in blue).
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The Dopamine circuit, for example, fires when we play an action game. Psychologist Daphné Bavelier has shown that this translates into rapid learning. The most violent action games seem to have the most intense effects, perhaps because they most strongly mobilize the brain’s alerting circuits. Ten hours of game-play suffice to improve visual detection, refine the rapid estimation of the number of objects on the screen, and expand the capacity to concentrate on a target without being distracted. ==A video game player manages to make ultrafast decisions without compromising his or her performance.==
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Far from reducing our ability to concentrate, video games can actually increase it.
(p.152)
Teachers who captivate their students, books that draw in their readers, and films and plays that transport their audiences and immerse them in real-life experiences probably provide equally powerful alerting signals that stimulate our brain plasticity.
(p.153)
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Tags: neuroscience science
Superlink: 050 🧠Neuroscience
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Erstellt: 27-04-22 14:14