1.9 KiB
Cortical activity is mirrored between the hemispheres
- Inter hemispheric functional connectivity, importance for autism, schizophrenia. Maybe an activity-dependent mechanism for commisural connectivity.
- Activity correlated in anterior-posterior and medial-lateral directions
- Mirror symmetric and non-mirror symmetric patterns
- Regional effects, more corr anticorr in certain regions?
- State dependent corr?
| xy pearson corr coef ML | xy pearson corr coef AP |
|---|---|
| p = 1.1591e-28 | p = 7.0982e-07 |
| 
Conclusions: So the activity in both hemispheres at postnatal day 3 (P3) clearly exhibits significant spatial correlations in both in the medial-lateral and anterior-extent. This is consistent with and complementary to the fact that the active pixel fraction in each hemisphere exhibits a strong temporal correlation as I found earlier in this report [Temporal correlation of activity][]. The medial-lateral positional correlation is stronger than the anterior-posterior (higher R and lower p value). The total number of coactive frames is numel(y1(~isnan(y1)&~isnan(y2))) == 1114 frames. This is accounts to 37.13% of the movie or 222.8 s. Cortex.L had 1635 actvFrames and cortex.R had 1677 actvFrames which means that each hemisphere was coactive with the other hemisphere 1114/1635 == 68.13% and 1114/1677 == 66.43% of the active time respectively.