What you see in the regions in blue, which lies in auditory cortex, are the brain areas that respond more to the real laughs, and what seems to be the case, when you hear somebody laughing involuntarily, you hear sounds you would never hear in any other context.
青く示された部分が 聴覚野にあたる場所にありますが ここは本物の笑いの方に より強く反応する脳の領域です そしてどうやら 意図せずに出る笑いの音は その他の状況では決して聞かれない 特異なもののようです