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Effects of sentence context on lexical ambiguity resolution in patients with schizophrenia

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Effects of sentence context on lexical ambiguity resolution in patients with schizophrenia. / Andreou, Christina; Tsapkini, Kyrana; Bozikas, Vasilis P; Giannakou, Maria; Karavatos, Athanasios; Nimatoudis, Ioannis.

In: NEUROPSYCHOLOGIA, Vol. 47, No. 4, 01.03.2009, p. 1079-87.

Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

Harvard

Andreou, C, Tsapkini, K, Bozikas, VP, Giannakou, M, Karavatos, A & Nimatoudis, I 2009, 'Effects of sentence context on lexical ambiguity resolution in patients with schizophrenia', NEUROPSYCHOLOGIA, vol. 47, no. 4, pp. 1079-87. https://doi.org/10.1016/j.neuropsychologia.2008.12.031

APA

Andreou, C., Tsapkini, K., Bozikas, V. P., Giannakou, M., Karavatos, A., & Nimatoudis, I. (2009). Effects of sentence context on lexical ambiguity resolution in patients with schizophrenia. NEUROPSYCHOLOGIA, 47(4), 1079-87. https://doi.org/10.1016/j.neuropsychologia.2008.12.031

Vancouver

Andreou C, Tsapkini K, Bozikas VP, Giannakou M, Karavatos A, Nimatoudis I. Effects of sentence context on lexical ambiguity resolution in patients with schizophrenia. NEUROPSYCHOLOGIA. 2009 Mar 1;47(4):1079-87. https://doi.org/10.1016/j.neuropsychologia.2008.12.031

Bibtex

@article{a5132d1500e14394908535198265eefe,
title = "Effects of sentence context on lexical ambiguity resolution in patients with schizophrenia",
abstract = "Previous research has suggested that a failure in processing contextual information may account for the heterogeneous clinical manifestations and cognitive impairments observed in schizophrenia. In the domain of language, context processing in schizophrenia has been investigated mostly with single-word semantic priming paradigms; however, natural language comprehension depends on more than semantic relations between words. The present study aimed to systematically assess sentence context effects in homonym meaning activation in patients with schizophrenia. Fourteen patients with schizophrenia and 14 normal controls matched to the patients on sex, age, education and parental education, were examined using a cross-modal priming paradigm. Primes were sentences biasing the first, second, or neither meaning of a sentence-final equibiased homonym; targets were related to either the first or the second meaning of the homonym and appeared after an interstimulus interval (ISI) of 0ms or 750ms. Patients with schizophrenia exhibited a trend towards facilitation of both target types following unbiased sentences at ISI=0ms, similar to controls. However, in contrast to the pattern of selective target facilitation exhibited by control subjects following first- or second meaning-biased sentences, no significant target facilitation was observed in patients in the same condition. At ISI=750ms, patients did no longer exhibit significant target facilitation in any sentence context condition. This pattern of results is compatible with the assumption of a combined impairment in lexical (automatic spreading of activation within the semantic network) and extralexical (working memory) processes in patients with schizophrenia.",
keywords = "Adult, Comprehension, Female, Humans, Language Tests, Male, Middle Aged, Neuropsychological Tests, Photic Stimulation, Reaction Time, Schizophrenia, Semantics, Vocabulary, Young Adult",
author = "Christina Andreou and Kyrana Tsapkini and Bozikas, {Vasilis P} and Maria Giannakou and Athanasios Karavatos and Ioannis Nimatoudis",
year = "2009",
month = mar,
day = "1",
doi = "10.1016/j.neuropsychologia.2008.12.031",
language = "English",
volume = "47",
pages = "1079--87",
journal = "NEUROPSYCHOLOGIA",
issn = "0028-3932",
publisher = "Elsevier Limited",
number = "4",

}

RIS

TY - JOUR

T1 - Effects of sentence context on lexical ambiguity resolution in patients with schizophrenia

AU - Andreou, Christina

AU - Tsapkini, Kyrana

AU - Bozikas, Vasilis P

AU - Giannakou, Maria

AU - Karavatos, Athanasios

AU - Nimatoudis, Ioannis

PY - 2009/3/1

Y1 - 2009/3/1

N2 - Previous research has suggested that a failure in processing contextual information may account for the heterogeneous clinical manifestations and cognitive impairments observed in schizophrenia. In the domain of language, context processing in schizophrenia has been investigated mostly with single-word semantic priming paradigms; however, natural language comprehension depends on more than semantic relations between words. The present study aimed to systematically assess sentence context effects in homonym meaning activation in patients with schizophrenia. Fourteen patients with schizophrenia and 14 normal controls matched to the patients on sex, age, education and parental education, were examined using a cross-modal priming paradigm. Primes were sentences biasing the first, second, or neither meaning of a sentence-final equibiased homonym; targets were related to either the first or the second meaning of the homonym and appeared after an interstimulus interval (ISI) of 0ms or 750ms. Patients with schizophrenia exhibited a trend towards facilitation of both target types following unbiased sentences at ISI=0ms, similar to controls. However, in contrast to the pattern of selective target facilitation exhibited by control subjects following first- or second meaning-biased sentences, no significant target facilitation was observed in patients in the same condition. At ISI=750ms, patients did no longer exhibit significant target facilitation in any sentence context condition. This pattern of results is compatible with the assumption of a combined impairment in lexical (automatic spreading of activation within the semantic network) and extralexical (working memory) processes in patients with schizophrenia.

AB - Previous research has suggested that a failure in processing contextual information may account for the heterogeneous clinical manifestations and cognitive impairments observed in schizophrenia. In the domain of language, context processing in schizophrenia has been investigated mostly with single-word semantic priming paradigms; however, natural language comprehension depends on more than semantic relations between words. The present study aimed to systematically assess sentence context effects in homonym meaning activation in patients with schizophrenia. Fourteen patients with schizophrenia and 14 normal controls matched to the patients on sex, age, education and parental education, were examined using a cross-modal priming paradigm. Primes were sentences biasing the first, second, or neither meaning of a sentence-final equibiased homonym; targets were related to either the first or the second meaning of the homonym and appeared after an interstimulus interval (ISI) of 0ms or 750ms. Patients with schizophrenia exhibited a trend towards facilitation of both target types following unbiased sentences at ISI=0ms, similar to controls. However, in contrast to the pattern of selective target facilitation exhibited by control subjects following first- or second meaning-biased sentences, no significant target facilitation was observed in patients in the same condition. At ISI=750ms, patients did no longer exhibit significant target facilitation in any sentence context condition. This pattern of results is compatible with the assumption of a combined impairment in lexical (automatic spreading of activation within the semantic network) and extralexical (working memory) processes in patients with schizophrenia.

KW - Adult

KW - Comprehension

KW - Female

KW - Humans

KW - Language Tests

KW - Male

KW - Middle Aged

KW - Neuropsychological Tests

KW - Photic Stimulation

KW - Reaction Time

KW - Schizophrenia

KW - Semantics

KW - Vocabulary

KW - Young Adult

U2 - 10.1016/j.neuropsychologia.2008.12.031

DO - 10.1016/j.neuropsychologia.2008.12.031

M3 - SCORING: Journal article

C2 - 19162050

VL - 47

SP - 1079

EP - 1087

JO - NEUROPSYCHOLOGIA

JF - NEUROPSYCHOLOGIA

SN - 0028-3932

IS - 4

ER -