dopamine levels tagged posts

Whether Physical Exertion feels ‘Easy’ or ‘Hard’ may be due to Dopamine levels, study suggests

Experimental paradigm. a Association phase; Participants were trained to associate between grip force exerted on a handheld dynamometer and effort levels from 0 to 100 (80% of maximum voluntary contraction (MVC)). Each trial began with presentation of the target, followed by an effortful grip with real-time visual feedback of the exerted force represented as a bar that increased in height with increased exertion. A target zone was also presented, and participants were asked to maintain their exerted force within this target zone. The target zone turned green when exerted force was within the target and stayed red otherwise. Feedback of success or failure was provided at the end of each trial...
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Insulin in the Brain influences Dopamine Levels

In the human brain, the hormone insulin also acts on the most important neurotransmitter for the reward system, dopamine. This was shown by researchers from the German Center for Diabetes Research (DZD) in Tübingen. Insulin lowers the dopamine level in a specific region of the brain (striatum *) that regulates reward processes and cognitive functions, among other things. This interaction can be an important driver of the brain’s regulation of glucose metabolism and eating behavior. The study has now been published in the Journal of Clinical Endocrinology & Metabolism.

Worldwide, more and more people are developing obesity and type 2 diabetes. Studies show that the brain plays an important role in causing these diseases...

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