Table 2.

Summary of the studies which included N100 component

Study	Subjects	Paradigm	Results
[31]	12 combat PTSD veterans 6 normal controls	Four tones intensity paradigm	No difference in N1 amplitude
[17]	20 Israeli combat veterans with PTSD 20 without PTSD	Visual oddball, trauma related non-related neutral stimuli	Combat-related pictures elicited enhanced N1 amplitude in PTSD group. Prolonged N1 latencies and reaction times to target stimuli in PTSD patients.
[56]	16 medicated, 9 un-medicated PTSD 10 healthy veterans	Auditory three-tone oddball	Longer N100 latencies in un-medicated PTSD patients compared to the medicated PTSD and healthy controls.
[51]	11 prisoners of war	Checkerboard reversal	Larger N75 amplitudes
[39]	11 PTSD survivors of a ship fire 9 psychiatric controls from the same ship	Auditory word and non-word oddball	Increased N1 latency to standard tones; Larger amplitude to emotionally meaningful words.
[25]	13 females with sexual assault PTSD 16 healthy controls	Auditory oddball	No difference in N100 amplitude and latency
[28]	17 civil PTSD 17 healthy controls	Auditory oddball	No difference in N100 amplitude or latency
[30]	36 civil PTSD 20 healthy 10 depressed 8 alcoholics	2000-Hz tone presented in increasing intensities	Increased N100 amplitudes
[38]	15 civil PTSD 15 controls	Visual presentation of angry alternating with neutral faces	Larger N110 to the angry compared to the neutral faces in the control group. Smaller and later N100 in PTSD subjects.
[35]	10 civil PTSD 10 controls	Auditory oddball	Larger N100 amplitude
[42]	19 PTSD 99 Alcohol dependence 16 personality disorder 25 anxiety or mood disorder	Visual presentation of happy, sad, and neutral faces	Larger N1 amplitudes to sad stimuli in frontotemporal leads in PTSD patients.
[57]	16 civil PTSD 16 schizophrenia 16 control subjects	Auditory Oddball	No difference in N1 amplitude and latency
[36]	14 PTSD [mixed etiologies] 12 controls	Auditory Oddball	No difference in N100 amplitude