Figure 1 (IMAGE) Kobe University Caption Normally neuronal activity in the primary somatosensory cortex is dispersed. However, there is an increase in synchronized neuronal activity when acute pain is experienced. Credit Takuya Okada Usage Restrictions Please credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.