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Patients with Posttraumatic Stress Disorder Show Decreased Cognitive Control: Evidence from Dichotic Listening
Published online by Cambridge University Press: 22 February 2011
Abstract
The influence of posttraumatic stress disorder (PTSD) on cognitive control and auditory attention modulation was examined with the use of a dichotic-listening (DL) task. The participants were 45 war-exposed refugees. The PTSD group comprised 22 participants meeting the DSM-IV criteria for PTSD, and the Control group comprised 23 war-exposed participants without PTSD. Both groups were tested with a consonant–vowel syllables DL task under three different attentional instructions. The two groups did not differ in the non-forced and forced-right conditions and showed, as expected, right-ear advantages. The Control group showed, as expected, a left-ear advantage in the forced-left (FL) condition. However, the PTSD group continued to show a right-ear advantage - and only minor modulation of the performance during the FL condition. This finding suggests that PTSD is associated with a reduced capacity for top-down attentional control of a bottom-up or stimulus-driven effect. The result shows that participants with PTSD have impaired cognitive control functions when tested on information processing of neutral stimuli. (JINS, 2011, 17, 344–353)
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- Research Articles
- Information
- Journal of the International Neuropsychological Society , Volume 17 , Issue 2 , 28 February 2011 , pp. 344 - 353
- Copyright
- Copyright © The International Neuropsychological Society 2011
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