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If visual stimulus is presented at 90° and odour at 180°, and assuming beetle is motivated to seek food. All angles in degrees.
| Nature of visual stimulus | Period 1 (visual alone) | Period 2 (visual + air) | Period 3 (visual + odour 1) | Period 4 (visual + odour 2) | Period 5 |
|---|---|---|---|---|---|
| Attractive | 90 | Between 90 and 180 but closer to 90 | Between 90 and 180 | As period 3 | 90 |
| Neutral | Random | 180 | 180 | 180 | Random |
| Repellent | 270 | 180–270 | 180–270 | 180–270 | 270 |
