Figure 5 | Scientific Reports

Figure 5

From: Digital reconstruction of infraslow activity in human intracranial ictal recordings using a deconvolution-based inverse filter

Figure 5

Inverse filter reconstruction of a mixed sine signal. An input signal with known low frequency components was generated by mixing sine waves of varying frequencies (A1). The frequency composition was confirmed with an amplitude spectrum (A2). As expected, activity in frequencies below 0.1 Hz was attenuated in the recorded output (B1,B2). The recording process also introduced a phase distortion (A3,B3). Deconvolution of the recorded output with the system’s UIR resulted in a signal with the low frequency components restored (C1,C2). This deconvolution process also corrected the phase distortion (A3,C3).

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