1) Biochemistry method 
GCaMP is a genetically encoded calcium indicator, or GECI initially developed by Junichi Nakai. GCaMP is created from a fusion of green fluorescent protein (GFP), calmodulin, and M13, a peptide sequence from myosin light chain kinase. The advantage of GECI`s are that they can be genetically specified for studies in living organisms. The first tra....