Figure 7. Effect of external visual input on sustained attention.
(a) Schematic of events in one trial (for comparison see Fig. 1d). Continued cue, the cue was presented until the rat responded to the stimulus port; transient cue, 0.5 second long, both were presented when the animal entered the trigger port, and they were alternated in different blocks in each session. (b) Comparisons of behavioral performance between continued and transient cue blocks (accurate: t(12) = 0.97, P = 0.349; premature: t(12) = 2.17, P = 0.051; omission: t(12) = 3.95, P = 0.0019; retrigger: t(12) = 1.24, P = 0.239). (c) Comparisons of reaction time between continued and transient cue blocks (t(12) = 4.03, P = 0.0017). (d–g) Electrophysiological data (rat no. = 3). (d–f) Comparisons in activities of all attention-related activated neurons (n = 19) between continued and transient cue blocks. (d) Trend of normalized firing rate in correct trials aligned to the time from trigger. (e) Comparisons in normalized firing rate (see Fig. 3e) in the three time windows BA, DA and AA (see Fig. 3c) between continued and transient cue blocks (two-way ANOVA with Greenhouse-Geisser adjustment: cue: F(1,18) = 0.20, P = 0.658; time: F(2,36) = 37.89, P = 2.11e-8; cue × time: F(2,36) = 0.18, P = 0.818). (f) Comparisons in normalized firing rate in the three time windows DA1, DA2 and DA3 (see Fig. 3c) between continued and transient cue blocks (two-way ANOVA with Greenhouse-Geisser adjustment: cue: F(1,18) = 0.23, P = 0.639; time: F(2,36) = 0.74, P = 0.418; cue × time: F(2,36) = 0.84, P = 0.400). (g) Trend of normalized firing rate of attention-related activated neurons (n = 19) in correct and omission trials in transient blocks with omission trials. The statistic results showed in panel b and c were from t tests. The statistic results showed in panel e and f were from post hoc simple effect analyses (MANOVA).