FIGURE 2. Experiment 4.
From the following article:
The concepts of 'sameness' and 'difference' in an insect
Martin Giurfa, Shaowu Zhang, Arnim Jenett, Randolf Menzel and Mandyam V. Srinivasan
Nature 410, 930-933(19 April 2001)
doi:10.1038/35073582
a, Set-up in which bees were trained to match odours. b, Set-up used for transfer tests in which bees trained on odour matching were tested on colour matching. c, Results. Left, learning tests for odour matching; right, transfer tests for colour matching.
