Figure 3.
Direct hippocampal stimulation. Hippocampal local field potentials (LFPs) and spectrograms (40 dB scale) recorded at approximately 15 months (year 2, top panels) and 57 months (year 5, bottom panels) post-implant from subject C1 illustrating the response to stimulation of the hippocampus. Stimulation was delivered to contacts HC E1-C+ at the amplitudes shown (50 Hz, 10 s ramped burst, 300 μs PW) while recording from contacts HC E0-E2. The large signal below the amplitude labels represents the recorded stimulus artifact.
