27 lines
1.9 KiB
Plaintext
27 lines
1.9 KiB
Plaintext
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## Cortical activity is mirrored between the hemispheres ##
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* Inter hemispheric functional connectivity, importance for autism, schizophrenia. Maybe an activity-dependent mechanism for commisural connectivity.
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* Activity correlated in anterior-posterior and medial-lateral directions
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* Mirror symmetric and non-mirror symmetric patterns
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* Regional effects, more corr anticorr in certain regions?
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* State dependent corr?
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<!--
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* sensory input required or stimulation experiments?
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* Each hemisphere 'training' the other one in preparation for behaviorally relevant sensory-motor imitations '[[mirror_neurons]]' hypothesis? -->
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xy pearson corr coef ML | xy pearson corr coef AP
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--- | ---
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p = 1.1591e-28 | p = 7.0982e-07
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**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.
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