Figure 4
From: Auditory evoked BOLD responses in awake compared to lightly anaesthetized zebra finches
Comparison of the BOLD response to auditory stimulation in awake vs anaesthetized conditions. (a) Main effect of condition. (b) Detailed graphs for 2 individual voxels within the main effect (voxels marked in (a) with ‘x’). The bars represent the mean BOLD response amplitude ( ± SEM) for all stimuli vs rest in the different conditions. (b) Positive (red/yellow) and negative (blue/green) BOLD responses to all stimuli in the different conditions. The statistical maps in (a) and (b) are superimposed on coronal and axial slices of the population based template. Only significant voxels (p uncorrected < 0.001; cluster extent >12 voxels) are displayed in the main figures. The insets in (b) represent statistical maps at a lower threshold (p uncorrected < 0.01; no cluster extent threshold) at two different levels along the dorso-ventral axis as indicated in the coronal figure by the blue and green horizontal lines. (c) Representative angiogram of the zebra finch brain. The arrowheads point to large blood vessels near the cerebellum at the location where the peak of the main effect of condition as represented in (a) was found.
