Variable selection by hypothesized physiopathogenic mechanisms

Physiopathogenic hypothesisReferencesHypothesis related variablesPCA selectedHigher weightFor cluster
DA hypoactivity in DLPC[31, 32]
[3542]
[96, 98]
TBR, zP300l, zP300a
zN200l, zN200a
zP50r, P100r
zP300l, zP300a
zN200a, zP50r
P300l1
Perisylvian network hyperexcitability[55, 6671, 102]zWBP, CTSzWBP, CTSzWBP, CTS2
Excite-inhibit imbalance, thalamocortical[48, 102]zTBR, BSSWBSSWBSSW3
Misallocation of attentional resources[35, 41]zP300l, zP300a, zN200l, zN200a, zP50r, P100r, zFBPzP300l, zP300a, zN200a, zP50r, zFBPzP300a, zP50r, zFBPP4
Vascular-metabolic decoupling, Cx hyperexcitability[95, 98]zDP, zFBP, HR, SSTzFBP, HR, SSTzFBP, HR, SST5
Poor interhemispheric collaboration[82, 105]zMAzMAzMA6

On the first and second column, physiopathogenic hypothesis and bibliographic references, followed by the EEG/ERP variables associated with other disorders and supporting references (after PCA selection); fourth column, variables statistically selected as independent contributors to the variance; in the fifth, variables with highest loads to a specific cluster; and the cluster number in the last column. DA: dopamine; PFC: prefrontal cortex; ThCx: thalamocortical; TBR: theta-beta ratio; zP300l: z-scored auditory P300 latency; zP300a: z-scored auditory P300 amplitude; zP50r: z-scored auditory P50 ratio; zWBP: z-scored Wide-Band Power (focal); zFBP: z-scored fast beta power (26–29 Hz sub-band, regional); zHR: z-scored 20 Hz power during 20 Hz photic stimulation; CTS: centrotemporal spikes; SST: small sharp transients; BSSW: bisynchronous spike waves; zMA: z-scored maturational asymmetry; PCA: Principal Component Analysis