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Supplementary Figure S2 from Muskuloskeletal modelling under an evolutionary perspective: deciphering the role of single muscle regions in closely related insects

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posted on 27.09.2016 by Sina David, Johannes Funken, Wolfgang Potthast, Alexander Blanke
Full overview of spatiotemporal activity patterns of single muscle groups within the main mandibular adductor for each species. Numbers in the upper right corner of each graph show fiber quantity (##) and group designation (G #) in the format (## / G #). Activation spreads of muscle groups in the Aeshna/Sympetrum setting show that the dorsal and ventral muscle groups with the lowest activity (G1+2, 8+9) have the largest spread of single fibre activity while muscle groups with a higher overall activity show a comparable low activity spread for their single fibres. Note that activation spread is not a function of modelled fibre quantity per muscle group. In the Anax muscle setting, the medial muscle groups G10-16 show a low activation spread, while activation spread for the main muscle groups G1-9 gradually increases from dorsal to ventral. The Cordulegaster muscle setting is characterized by a higher activation spread for the medial muscle groups (G1-10) compared to Anax. Similar to the Anax setting, activation spread increases from the dorsal to the ventral main muscle groups (G11-19). The distinct patterns mentioned for the three former species/muscle settings are basically not detectable for the Onychogomphus muscle setting. Activation spreads do not show a distinct separation between more medially located muscle groups (G1-13) compared to the lateral main groups. Equally, there is no distinct pattern observable between dorsal and ventral main muscle groups (G14-29).

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