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Table 1.

Overview of experimental subsets of setup 1

Rear boarder of landmark (m)
Search densities1 (%)in test area
ExperimentNTrainingTestTest area (m)Experimental groupControl groupP value (U-test)
Control 1 20 — — 8.5-9 1.31±1.03 vs 1.20±0.952 0.66 
Control 2 20 — 8.5-9 1.20±0.95 — — — 
1A 15 8.5-9 2.96±2.33 vs 1.20±0.952 <0.01 
1B 20 7.5 7-7.5 2.70±1.59 vs 1.32±1.092 <0.01 
1C 20 5.5-6 2.58±1.70 vs 1.10±1.102 <0.01 
1D 20 1.5-2 0.61±1.10 vs 0.29±0.822 0.13 
1E 20 — 7.5 8.5-9 0.71±1.35 vs 1.31±1.0333 <0.03 
Rear boarder of landmark (m)
Search densities1 (%)in test area
ExperimentNTrainingTestTest area (m)Experimental groupControl groupP value (U-test)
Control 1 20 — — 8.5-9 1.31±1.03 vs 1.20±0.952 0.66 
Control 2 20 — 8.5-9 1.20±0.95 — — — 
1A 15 8.5-9 2.96±2.33 vs 1.20±0.952 <0.01 
1B 20 7.5 7-7.5 2.70±1.59 vs 1.32±1.092 <0.01 
1C 20 5.5-6 2.58±1.70 vs 1.10±1.102 <0.01 
1D 20 1.5-2 0.61±1.10 vs 0.29±0.822 0.13 
1E 20 — 7.5 8.5-9 0.71±1.35 vs 1.31±1.0333 <0.03 

All landmarks used were of dark colour with a rough surface. The rear boarder of the 1-m landmark defines the LM-position. For each experiment a certain area of interest was determined and compared statistically to the data of the same area from a control group using the U-test.

2,3 The search densities at the test area specified in column 5 were tested against the analogue data section from: 2control 2, 3control 1.

1

All values given are mean ± s.d.

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