Deep Brain Stimulation of Hemiparkinsonian Rats with Unipolar and Bipolar Electrodes for up to 6 Weeks: Behavioral Testing of Freely Moving Animals

Table 1

Experimental design. The number of rats refers to the group sizes at the time of the apomorphine-induced rotation tests.

Group name	6-OHDA lesion	Electrode	DBS duration	Number of animals
Naive_3 d/3 w	−	—	—	10
Naive_sham_3 w	−	Bipolar	—	9
6-OHDA_sham_3 d/3 w	+	Bipolar	—	7
Sham_bi_3 d	Sham	Bipolar	3 days	9
Sham_bi_3 w	Sham	Bipolar	3 weeks	10
Sham_uni_6 w	Sham	Unipolar	6 weeks	7
6-OHDA_bi_3 d	+	Bipolar	3 days	7
6-OHDA_bi_3 w	+	Bipolar	3 weeks	5
6-OHDA_uni_3 d	+	Unipolar	3 days	13
6-OHDA_uni_3 w/3 w + 3 d off	+	Unipolar	3 weeks	11
6-OHDA_uni_6 w	+	Unipolar	6 weeks	7
6-OHDA_uni_3 w + 3 w off	+	Unipolar	3 weeks	8