Experimental design
Animals and surgery
Four male Long-Evans rats (Janvier, Le Genest-St-Isles, France) weighing 300–350 g were housed in individual cages (40 cm long \(\times \) 26 cm wide \(\times \) 16 cm high) with food and water ad libitum and maintained in a temperature-controlled room (20\(^{\circ }\) + 2). One week after their arrival, animals were handled daily by the experimenter for 7 days. They were then implanted with tetrodes aimed at the dorsomedial striatum (DMS) at the following coordinates: AP: +1mm, ML: ±2.2 mm from the midline, DV: \(-3\) mm below the dura. The…
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