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. 2016 Jan 4;11(1):e0146039. doi: 10.1371/journal.pone.0146039

Fig 3. Trail Making Test B (TMTB).

Fig 3

Self-administered pattern test going from numbers to corresponding letters in the alphabet as follows: 1→A→2→B→…→12→L→13. The pencil may not leave the paper during the test. Time to complete the tracing is recorded.