1. Figure 1.1 Artwork Carmela Espadinha

2. Figure 1.2

3. Figure 1.3

4. ` ` ` ` Original scene Top-down attentional filter Search + + + S1S1 S2S2 S3S3 Figure 1.4

5. F F vision audition 045 90135 180 -180 -135-90 -45 0 45 90 135 180 -45 -90 -135 -180 AZIMUTH ANGLE [deg] ELEVATION ANGLE [deg] Figure 1.5

6. Figure 1.6 visual objects auditory objects fixations AV-target in the world: A W /V W Head in the world H W Eye in E W the world Hybrid Reference Frame World Reference Frame V-target re. eye A-target re. head AV-target re. world

7. Figure 1-7 A B Azimuth Elevation Azimuth

8. Figure 1-8