Is a midbrain structure critical to movement. the medulla the pons the ventral tegmental area wernicke's area

The ventral tegmental area is termed as the midbrain structure which is critical to movement.

VTA is termed as a group of neurons which are located close to the midline on the floor of the midbrain. This is the origin of dopaminergic cell bodies of the mesocorticolimbic dopamine system.
It functions as a motivator,  cognition, and emotions which are related to love and also orgasm.
Their neurons project to various areas of the brain which ranges from prefrontal cortex to caudal brainstem and other regions.

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