Brain Connectivity Analysis in Color Perception Problem Using Convergent Cross Mapping Technique

The paper attempts to determine the brain connectivity among different brain regions/lobes during subjective engagement in color perception. Traditionally, Granger causality analysis is employed to handle the problem. However, due to the applicability of Granger causality analysis for purely stochastic systems only, its suitability of applications in brain connectivity analysis is limited due to the presence of both deterministic and stochastic characteristics in the human brain. Additionally, because of the high parameter sensitivity of Granger causality technique, identifying the right set of parameters itself poses an additional problem. Convergent cross mapping overcomes the above limitations and thus has immense scope for exploitation in brain connectivity analysis. This paper makes an honest attempt to determine brain connectivity during subjective engagement in color perception using convergent cross mapping technique. Experimental results envisage that the proposed technique yields precise brain connectivity in color perception in comparison with those obtained by the state-of-the-art techniques.