Table 2. Variables defined in the analysis of neuronal responses.

	Variable	Definition
1	position of A	Binary; one if juices A/B are offered on ipsi/contra sides, 0 otherwise
2	offer value A	Value of juice A offered
3	offer value B	Value of juice B offered
4	offer value ipsi	Value offered on the ipsi-lateral side
5	offer value contra	Value offered on the contra-lateral side
6	chosen value	Value of the chosen juice
7	chosen value A	Chosen value if juice A chosen, 0 otherwise
8	chosen value B	Chosen value if juice B chosen, 0 otherwise
9	chosen value ipsi	Chosen value if ipsi side is chosen, 0 otherwise
10	chosen value contra	Chosen value if contra side is chosen, 0 otherwise
11	chosen juice	Binary; one if juice A is chosen, 0 if juice B is chosen
12	chosen side	Binary; one if ipsi side is chosen, 0 if contra side is chosen