The antisaccade task in a sample of 2,006 young men - I. Normal population characteristics

Evdokimidis, I; Smyrnis, N; Constantinidis, TS; Stefanis, NC; Avramopoulos, D; Paximadis, C; Theleritis, C; Efstratiadis, C; Kastrinakis, G; Stefanis, CN

dc.contributor.author	Evdokimidis, I	en
dc.contributor.author	Smyrnis, N	en
dc.contributor.author	Constantinidis, TS	en
dc.contributor.author	Stefanis, NC	en
dc.contributor.author	Avramopoulos, D	en
dc.contributor.author	Paximadis, C	en
dc.contributor.author	Theleritis, C	en
dc.contributor.author	Efstratiadis, C	en
dc.contributor.author	Kastrinakis, G	en
dc.contributor.author	Stefanis, CN	en
dc.date.accessioned	2014-03-01T01:52:11Z
dc.date.available	2014-03-01T01:52:11Z
dc.date.issued	2002	en
dc.identifier.issn	0014-4819	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26594
dc.subject	antisaccade	en
dc.subject	saccade latency	en
dc.subject	latency variability	en
dc.subject	frontal lobe	en
dc.subject	IQ	en
dc.subject	human	en
dc.subject.classification	Neurosciences	en
dc.subject.other	SACCADIC EYE-MOVEMENTS	en
dc.subject.other	POSITRON EMISSION TOMOGRAPHY	en
dc.subject.other	ANTI-SACCADES	en
dc.subject.other	PRO-SACCADES	en
dc.subject.other	PERFORMANCE	en
dc.subject.other	SCHIZOPHRENIA	en
dc.subject.other	VOLUNTARY	en
dc.subject.other	DISORDER	en
dc.subject.other	FIELD	en
dc.title	The antisaccade task in a sample of 2,006 young men - I. Normal population characteristics	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	A population of 2,075 young men aged 1825 years selected from the conscripts of the Greek Air Force performed an antisaccade task as part of a prospective study for the identification of risk factors in the development of psychoses. The aim of this study, which is ongoing, is to follow this population and investigate the possible predictive value of oculomotor, cognitive, and psychometric factors for the development of psychosis and other psychiatric conditions. In this report we present data concerning the antisaccade task in this population. We measured performance indices, including the percentage of errors (PE), the latencies of different eye movement responses (latency for correct antisaccades, errors, corrections), and performance in perseveration-prone trials. These indices were also evaluated with respect to IQ (measured by the Raven progressive matrices test) and educational level. Mean PE was 23%, with 17% variance. This large variance is of particular importance whenever the detection of a putative deviant behavior is explored. As mean latency of the first eye movement decreased, the PE increased, as did the latency variance. While the negative correlation between percentage of error and mean latency is well established, the relationship of the latency variability of the first response to error production has not been studied before. Thus, optimal performance appears to require both an intermediate mean latency and a small variability. Furthermore, performance seems to be affected by IQ (the higher the IQ score, the lower the percentage of errors). This report offers an analysis of the interindividual variation in the performance of the antisaccade task and discusses some of the sources of this variation.	en
heal.publisher	SPRINGER-VERLAG	en
heal.journalName	EXPERIMENTAL BRAIN RESEARCH	en
dc.identifier.isi	ISI:000180860200007	en
dc.identifier.volume	147	en
dc.identifier.issue	1	en
dc.identifier.spage	45	en
dc.identifier.epage	52	en