Table 1 Summary of EEG DBS studies and their principal results. Subjects number were given only for those who had direct stimulation or ON/OFF DBS protocol
Study | Subjects | DBS target | Protocol | DBS effect |
|---|---|---|---|---|
Direct effect | ||||
  Ashby et al. (2001) | 6 PD | STN |  | CEPs at 3, 5 and 8 ms |
  Baker et al. (2002) | 10 PD, 4 Epi | STN |  | CEPs from 1 to 400 ms |
  MacKinnon et al. (2005) | 11 PD | STN | Electrical skin stimulation | CEP at 23 ms |
 Zumsteg (2006) | 9 Epi | Thal |  | CEPs between 20 and 320 ms |
 Zumsteg (2006) | 6 Epi | Thal |  | CEPs at 24, 34 and 70 ms |
  Tisch et al. (2008) | 6 Pri Gen Dyst | GP |  | CEP at 26.6 ms |
  Eusebio et al. (2009) | 16 PD | STN |  | CEP at 21 ms |
 Walker (2012a) | 5 PD | STN |  | CEPs at 1, 5.7 and 22.2 ms |
 Walker (2012b) | 5 Ess Trem | Thal |  | CEPs at 0.9, 5.6 and 13.9 ms |
ON/OFF designs | ||||
  Gerschlager et al. (1999) | 10 PD, 10 HC | STN | Go/NoGo | Increased contingent negative variation amplitude |
  Pierantozzi et al. (1999) | 6 PD | STN, GPi | Electrical skin stimulation | Increased frontal N30 amplitude |
  Gerschlager et al. (2001) | 8 PD | STN | Auditory oddball task | No effect on P300 latency |
  Priori et al. (2001) | 9 PD | STN | Electrical skin stimulation | Reduced N20 amplitude |
Passive visual task | Reduced P100 amplitude | |||
  Devos et al. (2002) | 6 PD | GPi | Wrist flexion movement | Increased contralateral premovement/movement ERD |
  Devos et al. (2003) | 10 PD | STN | Wrist flexion movement | Increased beta ERS |
  Devos et al. (2004) | 10 PD, 10 HC | STN | Wrist flexion movement | Reduced ERD spread and increased ERD amplitude |
  Insola et al. (2005) | 1 PD | STN | Electrical skin stimulation | Increased N20 and N30 amplitudes |
  Silberstein et al. (2005) | 16 PD | STN | Resting state | Reduced beta cortical coupling |
  Jech et al. (2006) | 11 PD | STN | Resting state | Reduced alpha power |
Passive visual task | Reduced N70/P100 | |||
  Kovacs et al. (2008) | 23 PD, 11 HC | STN | Auditory oddball task | P300 amplitude correlated to DBS voltage |
  Conte et al. (2010) | 13 PD, 13 HC | STN | Somatosensory temporal discrimination task | Reduced parietal SEP amplitude |
  Klostermann et al. (2010) | 10 PD | STN | Choice response task | Reduced lateralized readiness potentials |
Oddball task | ||||
  Cavanagh et al. (2011) | 14 PD | STN | Decision task | Inversed theta power relation to RT |
  Swann et al. (2011) | 15 PD, 15 HC | STN | Stop signal task | Increased right frontal beta power |
  Broadway et al. (2012) | 12 TRD | SCC | Resting state | Increased frontal theta cordance |
 Selzler (2013) | 10 PD, 20 HC | STN | Working memory task | Reduced N200 amplitude and increased N200 latency |
  Figee et al. (2013) | 13 OCD | NAc | Symptom provocation task | Reduced low frequency ERS |
  Smolders et al. (2013) | 8 OCD | NAc | Resting state | Reduced frontal theta phase stability |
  Quraan et al. (2014) | 12 TRD, 15 HC | SCC | Resting state | Frontal theta and parietal alpha asymmetry dependent on clinical response |
 Hilimire (2015) | 7 TRD | SCC | Emotional self referential task | Reduced P1 and P3 amplitudes |
  Gulberti et al. (2015a) | 12 PD, 12 HC | STN | Rhythmic auditory stimulation | Reduced P1/N1 amplitude |
  Gulberti et al. (2015b) | 12 PD, 12 HC | STN | Rhythmic auditory stimulation Resting state | Normalized beta modulation Reduced beta power |
  Sun et al. (2015) | 20 TRD | SCC | Working memory task | Reduced frontal gamma and beta power and increased theta-gamma coupling |
 Kibleur (2016) | 12 OCD | STN | Stop signal task | Reduced P300 amplitude and increased P300 latency and reduced basal ganglia to right frontal cx connection strength |
 Kibleur (2017) | 5 TRD | SCC | Emotional Stroop task | Reduced N170 amplitude and reduced temporal pole to visual ventral cx connection strength |