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. Author manuscript; available in PMC: 2021 Aug 22.
Published in final edited form as: Nat Neurosci. 2021 Feb 22;24(3):412–424. doi: 10.1038/s41593-021-00798-5

Fig. 2 |. Potential strategies for generating compound reaches.

Fig. 2 |

a, Mean EMG for single (black) and compound (grey) reach conditions. Data are from the anterior deltoid of Monkey B. Traces are grouped according to the location of the first target. Circles indicate the time of reach onset minus 100 ms (the approximate latency between EMG onset and reach onset). The vertical scaling of the traces is arbitrary but consistent across all traces. During compound reaches, EMG evolved continuously throughout the full sequence; there was no pause or plateau between reaches. b, Illustration of the holistic strategy. Under the holistic strategy, compound reaches are produced as single movements, which require only a single pattern of preparatory activity and a single trigger signal. c, Illustration of the independent strategy. Under the independent strategy, compound reaches are generated by preparation, triggering, and execution occurring twice in succession.