Flat affect vs blunted affect vs shock versus full range of emotions.

Flat affect is an almost lack of emotional response. No emotional reaction, positive or negative. Like being stunned. That was me in the ER.

Blunted Affect means a reduced range of emotional response. So, less extreme than a flat affect. 

Shock means very intense emotions.

Full range of emotion is a normal emotional style. I feel like I don't experience this much.