업데이트 'README.md'

README.md

@@ -15,7 +15,7 @@ A set of screw (2+1 channels of EEG & Accelerometer, 24-hour x 9-day recordings)
 
 > High density EEG: 36 channels of EEG: intermittent 2-hour recordings (Total 9 mice, 2x).
    
-![Figure 1](https://www.pnas.org/content/pnas/114/9/E1727/F1.large.jpg)
+![Figure 1](https://www.pnas.org/cms/10.1073/pnas.1615230114/asset/31229929-06ed-4d19-a2e8-fb7bb82a66ed/assets/graphic/pnas.1615230114sfig01.jpeg)
    
 > Screw EEG: 2+1 channels (EEG & accelerometer): ceaseless 9-day recording (Total 9 mice, 9x24 hours per mouse).