[word=while] [lemma=the] [lemma=arrow] [□=□]
[word=while] [lemma=the] [lemma=arrow] [tag=□]
[word=while] [lemma=the] [lemma=arrow] [lemma=□]
Brain images were obtained during the expectancy phase while the arrow was spinning and during the outcome phase when the arrow pointed to one of the segments .