title: Temporal allocation of attention toward threat in individuals with posttraumatic stress symptoms.
abstract: Research suggests that individuals with posttraumatic stress disorder (PTSD) selectively attend to threat-relevant information. However, little is known about how initial detection of threat influences the processing of subsequently encountered stimuli. To address this issue, we used a rapid serial visual presentation paradigm (RSVP; Raymond, J. E., Shapiro, K. L., & Arnell, K. M. (1992). Temporary suppression of visual processing in an RSVP task: An attentional blink? Journal of Experimental Psychology: Human Perception and Performance, 18, 849-860) to examine temporal allocation of attention to threat-related and neutral stimuli in individuals with PTSD symptoms (PTS), traumatized individuals without PTSD symptoms (TC), and non-anxious controls (NAC). Participants were asked to identify one or two targets in an RSVP stream. Typically processing of the first target decreases accuracy of identifying the second target as a function of the temporal lag between targets. Results revealed that the PTS group was significantly more accurate in detecting a neutral target when it was presented 300 or 500ms after threat-related stimuli compared to when the target followed neutral stimuli. These results suggest that individuals with PTSD may process trauma-relevant information more rapidly and efficiently than benign information.
authors.affiliation: SDSU/UCSD Joint Doctoral Program in Clinical Psychology, Department of Psychology, San Diego State University, San Diego, CA 92120, USA. namir@mail.sdsu.edu
authors.forename: Nader
authors.initials: N
authors.lastname: Amir
authors.forename: Charles T
authors.initials: CT
authors.lastname: Taylor
authors.forename: Jessica A
authors.initials: JA
authors.lastname: Bomyea
authors.forename: Christal L
authors.initials: CL
authors.lastname: Badour
mesh_terms: D000293:Adolescent; D001007:Anxiety / Q000175:diagnosis / Q000523:psychology; D001143:Arousal; D001288:Attention; D054518:Attentional Blink; D001362:Avoidance Learning; D003118:Color Perception; D005239:Fear; D005260:Female; D006801:Humans; D008016:Life Change Events; D008297:Male; D010364:Pattern Recognition, Visual; D011930:Reaction Time; D012660:Semantics; D012691:Serial Learning; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000523:psychology; D055815:Young Adult
references.citation: J Trauma Stress. 1997 Oct;10(4):635-44
references.pmid: 9391946
references.citation: Clin Psychol Rev. 2003 May;23(3):339-76
references.pmid: 12729677
references.citation: Cogn Affect Behav Neurosci. 2005 Dec;5(4):396-404
references.pmid: 16541810
references.citation: J Exp Psychol Hum Percept Perform. 2008 Apr;34(2):328-39
references.pmid: 18377174
references.citation: Behav Res Ther. 2007 Aug;45(8):1903-13
references.pmid: 17049337
references.citation: Trends Cogn Sci. 1997 Nov;1(8):291-6
references.pmid: 21223931
references.citation: J Consult Clin Psychol. 2000 Oct;68(5):748-66
references.pmid: 11068961
references.citation: J Abnorm Psychol. 2002 May;111(2):370-9
references.pmid: 12003458
references.citation: Emotion. 2007 May;7(2):336-53
references.pmid: 17516812
references.citation: Psychol Bull. 2006 Nov;132(6):959-92
references.pmid: 17073529
references.citation: Emotion. 2004 Mar;4(1):23-35
references.pmid: 15053724
references.citation: Trends Cogn Sci. 2006 Jun;10(6):271-7
references.pmid: 16697695
references.citation: J Exp Psychol Gen. 2005 May;134(2):258-81
references.pmid: 15869349
references.citation: Mem Cognit. 2008 Jan;36(1):182-200
references.pmid: 18323074
references.citation: Psychiatry Res. 2004 May 30;126(3):265-74
references.pmid: 15157752
references.citation: J Anxiety Disord. 2008 May;22(4):655-70
references.pmid: 17681743
references.citation: Psychol Bull. 1996 Jul;120(1):3-24
references.pmid: 8711015
references.citation: Emotion. 2006 Aug;6(3):523-7
references.pmid: 16938093
references.citation: J Abnorm Psychol. 2004 May;113(2):315-323
references.pmid: 15122951
references.citation: J Anxiety Disord. 2002;16(6):675-92
references.pmid: 12405525
references.citation: Behav Res Ther. 2000 Apr;38(4):319-45
references.pmid: 10761279
references.citation: Emotion. 2005 Mar;5(1):103-12
references.pmid: 15755223
references.citation: Brain Res. 2007 May 7;1148:149-60
references.pmid: 17367765
references.citation: J Anxiety Disord. 2007;21(8):977-90
references.pmid: 17275254
references.citation: J Exp Psychol Hum Percept Perform. 1992 Aug;18(3):849-60
references.pmid: 1500880
references.citation: J Exp Psychol Hum Percept Perform. 1995 Feb;21(1):109-27
references.pmid: 7707027
references.citation: Annu Rev Clin Psychol. 2005;1:167-95
references.pmid: 17716086