BEST vs PTE on brain entropy assessment: a comparison of methodologies

Dear community,

I am wonderirng what would be the difference amongst BEST tbx and PTE in terms of results interpreting how some areas have higher entropy than others.

I have asked in another post MEM BEST interpretation - #5 by edelaire that I wanted to compute entropy from BEST source estimates.

I want to use this information to understand the level of thermodynamic entropy in the brain or specific regions related to the shannon entropy computed.

I understand PTE refers to functional connectivity based on transfer entropy also based on shannon entropy as well based on similar to gibbs entropy in the brain.

I also understand BEST tbx provides means to compute based on KL divergence on relation to prior and posterior distribution porbabilities the drop of entropy which means lower entropy so far I have understood.

My question based on all these observations would be how could I use each different method to assess entropy in the brain or in specific regions if possible?

Obviously with BEST I cannot see anything but cortex and with PTE I cannot see as far as I understand specific values of drop of entrop like in MEM.

Although I can observe causality in regions provoking which level of entropy (higher or lower)?
i.e. lets say I have A-->B which regions is higher on entropy A or B?

Thank you for kindly answering all my questions. And thank you for your patience.

Ping @Sylvain @edelaire

1 Like

Please refer to the Corbier et al. original PTE paper for the foundations of the metric. Besides, there is substantial literature on how to assess the entropy of time series.

1 Like

thank you so much!!!