Figure 1 shows the timeline of the experiments. Four weeks after 6-OHDA injection, the lesioned rats which passed the apomorphine-induced contralateral rotation test were divided into three groups according to the number of pulses received: sham-iTBS, 1 block-iTBS (one iTBS block) and 3 block-iTBS (three blocks of iTBS). All three groups were subjected to behavioral tests, histology and immunohistochemistry at 30 or 80 min post-stimulation. In the specific case of behavioral tests including the object-place recognition (OPR) and hole-board (HB) test, the first trial of the two tests started at 30 or 80 min after real (different blocks) or sham-iTBS. Besides, hippocampal local field potential (LFP) was recorded in all three groups for 3 h, including 1 h pre-stimulation baseline and 2 h post-stimulation recordings 4 weeks after 6-OHDA injection.
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