A flash of light evokes various subthreshold responses in dLGN neurons. Whole-cell current-clamp recordings were acquired from six dLGN neurons in awake, head-restricted mice in which the contralateral eyes were presented with full-field white flashes at pseudorandom intervals of 8–10 s for 50 trials. Representative 10 trials of raw V_m responses of six neurons (top) and their mean ± SD subthreshold V_m responses (bottom) are shown. The blue and red boxes above the subthreshold response show the significant early (0–0.3 s) and late (0.4–2.0) responses, respectively. The red-edged white box shows cell 6, which exhibited late spike responses even though it did not exhibit significant depolarization at the subthreshold level.