Review of Studies of Voice Identity Processing in Schizophrenia and Its Relationship with avh sz vs. Hc

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Date	18.10.2016
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Author Sample size and features Subtypes
AVH vs. NAVH

Supplemental Table 1. Review of Studies of Voice Identity Processing in Schizophrenia and Its Relationship with AVH

SZ vs. HC
	Author	Sample size and features	Subtypes	Method and design	Results
	(Ford, Mathalon, Kalba, et al., 2001b)⁸⁹	10 HC; 12 SZ ^{(a, e)}	4 P; 6U; 1D; 1 R	ERP - responses to acoustic probes during talking vs. listening	SZ ≠ HC
	(Ford, Mathalon, Heinks, et al., 2001)⁹²	7 HC; 7 SZ ^(N.A.)	N.A.	ERP - talking aloud vs. listening	SZ ≠ HC
	(Ford, Mathalon, Kalba, et al., 2001a)⁹⁰	15 HC; 15 SZ (^{a, e)}	N.A.	ERP - inner speech vs. listening	SZ ≠ HC
	(Ford & Mathalon, 2005)⁸⁷	Aims 3 and 4: 21 HC; 20 SZ ^{(a, e)} (aims 1 and 2 inFord, Mathalon, Kalba, et al., 2001b)	N.A.	EEG coherence - talking vs. listening	SZ ≠ HC
	(Ford, Roach, Faustman, & Mathalon, 2007)⁹⁶	25 HC; 24 SZ/SAD ^(e)	10 U; 9 P; 3 SAD; 2 R	ERP and EEG coherence - talking vs. listening to self-generated voice.	SZ ≠ HC; Neural synchrony anomalies↔ AH severity
	(Rotarska-Jagiela et al., 2009)⁸²	24 HC; 24 SZ with AVH ^{(c, d)}	N.A.	DTI	SZ ≠ HC
	(Kumari et al., 2010)⁶⁵	20 HC; 63 SZ ^(c)	N.A.	fMRI - identity judgment of vocal feedback during reading	SZ ≠ HC; Good ≠ bad performers; brain functioning anomalies ↔ AH severity
	(Whitford et al., 2011)⁸³	25 HC ; 21 SZ ^(e)	N.A.	ERP - self-induced vocal stimuli by button press; DTI	SZ ≠ HC
	(Simons et al., 2010)⁷²	12 HC; 15 SZ with AVH (during illness exacerbations)	N.A.	fMRI - listening vs. inner speech generation	SZ ≠ HC
	(Ilankovic et al., 2011)⁶⁷	23 HC; 23 SZ with AVH ( ≥3 score) ^(a)	N.A.	Behavioral - voice identity judgment preceded by a congruent/incongruent cue	SZ ≠ HC; misattribution errors ↔ delusional severity
AVH vs. NAVH
	Author	Sample size and features	Subtypes	Method and design	Results
	(Johns et al., 2001)²³	20 HC; 10 AVH (current) ^(a); 8 NAVH ⁽ⁱ⁾	N.A.	Behavioral - identity judgment of vocal feedback during reading	SZ ≠ HC; AVH ≠ NAVH;
	(Ford, Mathalon, Whitfield, Faustman, & Roth, 2002)⁹⁵	10 HC; 7 AVH (5-7 score)^{(e, a)}; 5 NAVH (1-2 score)^{(e, a)}	4 P, 6 U, 1 D, 1 R	EEG coherence - responses to acoustic probes during talking vs. listening	AVH ≠ NAVH / HC;
	(Allen et al., 2004)³³	15 HC; 15 AVH (current & ≥3 score) ^(a); 13 NAVH (no current & 0 score) ^(a)	N.A.	Behavioral - voice identity judgment	AVH ≠ NAVH / HC
	(Hubl et al., 2004)⁸¹	13 HC; 13 AVH (current) ^(d); 13 non-AVH (no history)	N.A.	DTI	AVH ≠ NAVH / HC
	(Johns et al., 2006)²⁴	20 HC; 10 AP with AVH; 15 SZ/SAD with AVH (current)^(a) ; 15 SZ/SAD with AVH history ⁽ⁱ⁾; 15 SZ /SAD without AVH history ⁽ⁱ⁾	N.A.	Behavioral - identity judgment of vocal feedback during reading	SZ/SAD with AVH ≠ HC / SZ/SAD with AVH history / AP with AVH
	(Allen, Amaro, et al., 2007)²⁸	11 HC; 10 AVH (past week & ≥3 score )^(a); 10 non-AVH (no history)	N.A.	fMRI - voice identity judgment	AVH ≠ NAVH / HC
	(Heinks-Maldonado et al., 2007)⁶⁹	17 HC; 20 SZ: 10 AVH (past 4 weeks) ^(a); 10 NAVH (absent for the last 4 weeks & ≤1 score)^(a)	N.A.	ERP - identity judgment of vocal feedback during talking	AVH ≠ NAVH / HC
	(Mechelli et al., 2007)⁶⁸	10 HC; 11 AVH (past week)^(a); 10 NAVH (no history)	N.A.	fMRI & DCM - voice identity judgment	SZ ≠ HC; AVH ≠ NAVH / HC
	(Fu et al., 2008)⁷⁰	13 HC; 10 AVH; 10 NAVH	N.A.	fMRI - identity judgment of vocal feedback	AVH ≠ NAVH / HC
	(Zhang et al., 2008)³⁰	13 HC; 26 SZ: 13 AVH; 13 NAVH ^(a)	P	fMRI - familiar vs. unfamiliar voices discrimination	AVH ≠ HC
	(Alba-ferrara, Weis, Damjanovic, Rowett, & Hausmann, 2012)²⁹	13 HC; 13 AVH (current & ≥3 score) ^(a); 12 NAVH (no current & ≤1score) ^(a)	N.A.	Behavioral - famous voices recognition	SZ ≠ HC; AVH ≠ NAVH;
	(Chhabra, Badcock, Maybery, & Leung, 2012)³¹	34 HC; 65 SZ/SZ spectrum disorder: 33 AVH (current) ^(b); 32 NAVH (no current)	N.A.	Behavioral - similarity judgment between voices	SZ ≠ HC
	(Mou et al., 2013)⁶⁴	13 HC; 13 AVH (past 2 weeks & ≥4 score)^(a); 13 NAVH (no history & 0 score)^(a)	N.A.	fMRI- identity judgment of familiar vs. unfamiliar voices	AVH ≠ NAVH / HC

Note. SZ=schizophrenia; NAVH=without AVH; SAD=schizoaffective disorder; AP=affective psychosis; P=paranoid; U=undifferentiated; D=disorganized; R=Residual; PNOS=psychosis not otherwise specified; SZP=schizophreniform; SZD=Schizoid; FEP= First-episode: N.A. = NON APPLICABLE; AH=auditory hallucinations

^aScale for the Assessment of Positive Symptoms – SAPS (Andreasen, 1984);⁹⁷ ^b Psychotic Symptom Rating Scales (Haddock, McCarron, Tarrier, & Faragher, 1999);⁹⁸ ^c Positive and Negative Syndrome Scale – PANSS(Kay, S R Fiszbein & Opler, 1987);⁹⁹ ^dSemi-structured interview;^e Brief Psychiatric Rating Scale – BPRS (Overall, 1961);¹⁰⁰ ^fModified version of the Present State Examination (Wing et al., 1990);¹⁰¹ ^g Topography of Voices Rating Scale (Husting & Hafner, 1990);¹⁰² ^h Launay-Slade Hallucination Scale (Bentall & Slade, 1986);¹⁰³ ⁱ Assessed by case-notes and patients self-report.

Directory: wolterskluwer vitalstream com -> PermaLink
PermaLink -> Appendix. Diagnosis clusters and their corresponding icd-9 codes
PermaLink -> Icd-9 Code Description
PermaLink -> Supplemental Table 2: Full bibliography of articles included in the systematic review

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