Optical measurement of tissue perfusion changes as an alternative to electrocardiography for heart rate monitoring in Atlantic salmon (Salmo salar)

Table 1 Summary of data set evaluations for both orientations, “Or.”, (Hor = horizontal and Ver = vertical) and all rotations, “Rot.”, (see Fig. 2) for all fish

Or.	Rot.	Fish1	Fish2	Fish3	Fish4	Fish5	Fish6
Hor 1	0	NVD	NVD	λ2	NVD	λ2	NVD
Hor	90	NVD	NVD	λ2	NVD	NVD	NVD
Hor	180	NVD	NVD	λ1, λ2	NVD	λ2	NVD
Hor	270	NVD	NVD	λ1, λ2	NVD	λ1, λ2	NVD
Hor 2	0	NVD	NVD	λ1, λ2	NVD	NVD	NVD
Ver 1	0	λ1, λ2	λ1, λ2	λ1, λ2	λ1, λ2	λ1, λ2	NVD
Ver	90	λ1, λ2	λ1, λ2	N/A	λ1, λ2	NVD	λ1, λ2
Ver	180	λ1, λ2	NVD	N/A	NVD	NVD	NVD
Ver	270	λ1, λ2	λ1, λ2	N/A	λ1, λ2	λ1, λ2	λ1, λ2
Ver 2	0	λ1, λ2	λ1, λ2	N/A	λ1, λ2	λ1, λ2	λ1, λ2

NVD signifies “No Valid Data”, i.e., no part of the time series fulfils all selection requirements. λ1 and λ2 represents valid data for 660 nm and 880 nm, respectively
“N/A” (Not Applicable) denotes the data series which could not be collected for Fish 3 due to cardiac arrest. Note that the 0 degrees measurement has been repeated for both orientations

ISSN: 2050-3385