Table 1.

Patient characteristics and spectral peaks

PatientSexAgePTT sideEEG power peak (Hz)LFP power peak (Hz)Thalamocortical theta coherence peakThalamocortical β coherence peak
Height (%)Frequency (Hz)FWHM (Hz)Height (%)Frequency (Hz)FWHM (Hz)Site
1M85Left8.07.7428.03.25160.8C3
2M65Right7.07.9526.80.88182.7C4
3M76Left8.08.0738.31.514171.9C3
4F64Right6.56.4566.02.111152.1C4
5M71Right8.58.5608.31.815150.9C4
6M62Left7.06.0657.51.514131.2C3
  • The laterality of the surgical intervention pallidothalamic tractotomy (PTT) determines the site of recording in left or right thalamic nuclei VA/VLa. For the EEG and LFP power spectra, the position of the dominant peak is given in hertz. Significant peaks of the thalamocortical coherence were found in the 4–9 Hz theta and in 13–20 Hz β frequency bands. The site of enhanced β coherence was ipsilateral to the site of thalamic recording for all patients. FWHM, Full-width at half-maximum; M, male; F, female.