Fig. 5: Hemodynamic latencies cannot explain the arousal-locked temporal dynamics in the thalamus.
From: A temporal sequence of thalamic activity unfolds at transitions in behavioral arousal state
a fMRI signals increase after breathhold release (purple dashed line). The time of the breathhold is shaded in light purple. The thalamus leads the cortex by 0.12 s. Data were presented as mean values, and shading represents standard error. b Small hemodynamic lags between thalamic nuclei exist but are not large enough to account for the arousal-locked sequence. The color and ordering of thalamic nuclei represent the lag sequence during arousal. Mean lag (solid line) and 95% confidence interval (shading) were calculated by the same method as Fig. 4d. Purple dashed line represents a zero-lag relative to the whole thalamus. c Respiration amplitude increases at behavioral arousal (dashed line). Data were presented as mean values, and shading is the standard error. d Amplitude of the pulse signal decreases after behavioral arousal. Shading is a standard error. Source data are provided in the “Fig. 5 Source Data” file.
