70 min habituation	0 min opto-stim	60 min food access
65 min habituation	5 min opto-stim	60 min food access
55 min habituation	15 min opto-stim	60 min food access
40 min habituation	30 min opto-stim	60 min food access
10 min habituation	60 min opto-stim	60 min food access