playing video games often, what are the hidden things that effects your brain..??

The effects of video games on the brain is a hugh controversial or debate  thing, as both benefits and drawbacks have been found, depending on the content of the video games played. Changes in brain regions associated with vision, motor skills, attention, reward, planning, emotion and social behavior are found after playing video games. It highly effects your brain if you play video games continuously for a couple of hours.

VISION AND EYE RELATED PROBLEMS :
Contrast sensitivity decreases with age, so enhancements to it are of therapeutic interest. This increase in contrast sensitivity after video games is likely due to brain changes, as opposed to changes in the eyes, because video games enhance attention, and attention increases the activity of brain cells in a region called the visual cortex, which processes vision. Another study, published in 2003 in Nature by Green and Bavelier, corroborates this theory because it found video game playing resulted in enhanced visual attention to the borders of the computer screen.

Effects in brain activities :

A functional magnetic resonance imaging (fMRI) study published in 2006 by Weber and Mathiak found that before firing weapons in violent games, there is more activity in the dorsal anterior cingulate cortex, an area associated with planning, while during and briefly after firing a weapon, there is less brain activity in the rostral anterior cingulated cortex and amygdala, two regions associated with emotion.