Table 1.

The main parameters used in EEG-fMRI analyses

Analysis no	IED onsets (in scans)	Time derivative (yes/no)	1st order time modulation (yes/no)	Model interactions with Volterra (yes/no)
1	Onsets 1: {31 47 48 49 58 62 86 90 102 108 110 113 127 153 155 156 160 162 173 174 181 183 198 206 210 222 251 273 284 288 314 316 327}	Yes	Yes	Yes
2	Onsets 2: {29 31 47 48 49 58 85 90 102 108 110 113 127 155 156 160 162 173 174 181 183 198 206 210 219 222 248 251 273 284 288 314 316 327}	Yes	Yes	Yes
3	Onsets 1: {31 47 48 49 58 62 86 90 102 108 110 113 127 153 155 156 160 162 173 174 181 183 198 206 210 222 251 273 284 288 314 316 327}	No	No	No
4	Onsets 2: {29 31 47 48 49 58 85 90 102 108 110 113 127 155 156 160 162 173 174 181 183 198 206 210 219 222 248 251 273 284 288 314 316 327}	No	No	No
5	Onsets 2: {29 31 47 48 49 58 85 90 102 108 110 113 127 155 156 160 162 173 174 181 183 198 206 210 219 222 248 251 273 284 288 314 316 327}	Yes	No	No
6	Onsets 2: {29 31 47 48 49 58 85 90 102 108 110 113 127 155 156 160 162 173 174 181 183 198 206 210 219 222 248 251 273 284 288 314 316 327}	Yes	Yes	No
7	Onsets 3: {28 263 287}	No	No	No
8	Onsets 4: {28 102 181 263 287 314}	No	No	No
9	Onsets 5: {28 102 181 263 287 314 371 416}	No	No	No

Notes: Onsets 1–5: five sets of IED event onsets provided by five raters (and times). Analysis 1: This analysis used the same IED onset and the same model options and parameters as those used in our presurgical EEG-fMRI analysis. Onsets 2–5 in analyses 2–9: IED onsets identified and used recently. IED onsets 1–4 in analyses 1–8 were marked for the first 360 volumes, and the last 120 volumes were ignored. IED onset 5 in analysis 9 was marked for all the 480 volumes.

Abbreviations: EEG, electroencephalography; fMRI, functional magnetic resonance imaging; IED, interictal epileptiform discharge.