IIIE   20352
INSTITUTO DE INVESTIGACIONES EN INGENIERIA ELECTRICA "ALFREDO DESAGES"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Contextual predictability enhances reading performance in Schizophrenic persons
Autor/es:
FERNÁNDEZ GERARDO ABEL; OROZCO DAVID; SAPOGNIKOFF MARCELO; GUINJOAN SALVADOR; AGAMENNONI OSVALDO
Lugar:
buenos aires
Reunión:
Encuentro; neurocog2015; 2015
Institución organizadora:
UBA CONICET
Resumen:
In the present work we analyzed fixation duration in 40 healthy
individuals and 18 patients with chronic, stable schizophrenia (SZ)
during reading of regular sentences and proverbs. While they read, their
eye movements were recorded. We used lineal mixed models to analyze
fixation durations. The predictability of words N-1, N, and N+1 exerted a
strong influence on controls and SZ patients. The influence of the
predictabilities of preceding, current, and upcoming words on SZ was
clearly reduced for proverbs in comparison to regular sentences. Both
controls and SZ readers were able to use highly predictable fixated
words for efficient reading. Our results suggest that SZ readers might
compensate attentional and working memory deficiencies by using stored
information of familiar texts for enhancing their reading performance.
The predictabilities of words in proverbs serve as task-appropriate cues
that are used by SZ readers. In summary, the findings are a
demonstration of how SZ might compensate top-down processing and working
memory deficiencies by using stored information due to familiarity with
the proverbs. To the best of our knowledge, this is the first study
measuring how patients with SZ process well-defined words embedded in
regular sentences and proverbs. Evaluation of the resulting changes in
fixation durations might provide a useful tool for understanding how SZ
patients could enhance their working memory performance.