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Are Cognitive Symptoms of Schizophrenia Mediated by Abnormalities in Emotional Arousal?

Published online by Cambridge University Press:  07 November 2014

Abstract

We tested 28 individuals with schizophrenia (SZ) and 16 healthy individuals on a test of logical reasoning and “cognitive gating,” defined as the ability to discriminate between relevant and irrelevant information in confirming or disconfirming a given belief. The Logical Reasoning and Cognitive Gating Task tests both processes under neutral and affect-laden conditions. This is done by presenting formally identical constructs using benign and emotionally arousing language. When separated by symptom profiles, we found statistically significant differences for performance and arousal response between patients with delusions, patients with formal thought disorder, and patients with neither delusions nor formal thought disorder, as well as between patients and healthy controls. When analyzed by error type, we found that nearly all errors by delusional patients were caused by overly restrictive information choice, a pattern that may be related to a delusional patient's tendency to “jump to conclusions” on Bayesian probabilistic tasks. This is in contrast to patients with formal thought disorder, whose low performance resulted also from overly extensive information choice. The tendencies towards restriction were exacerbated by arousal, which is consistent with studies on cognition and arousal in healthy individuals. After briefly examining research on emotional arousal and SZ, and the interaction between emotional arousal and restriction of perceptual cues in healthy individuals, we conclude by suggesting a model which accounts for the distinctive cognitive characteristics of delusional patients by their possessing distinct vulnerabilities to emotional arousal. Specifically, these results suggest the possibility that delusional patients process information in a manner that is essentially intact. However, delusional patients may possess an acute vulnerability to emotional arousal that might cause delusional individuals to behave cognitively as if they were healthy individuals under significantly more severe forms of stress.

Type
Original Research
Copyright
Copyright © Cambridge University Press 2002

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References

REFERENCES

1.Myin-Germeys, I, Nicolson, NA, Delespaul, PA. The context of delusional experiences in the daily life of patients with schizophrenia. Psychol Med. 2001;31:489498.CrossRefGoogle ScholarPubMed
2.Mujica-Parodi, LR, Malaspina, D, Sackeim, HA. Logical processing, affect, and delusional thought in schizophrenia. Har Rev Psychiatry. 2000;8:7383.CrossRefGoogle ScholarPubMed
3.Garety, PA, Hemsley, DR, Wessely, S. Reasoning in deluded schizophrenic and paranoid patients: bases in performance on a probabilistic inference task. J Nerv Ment Dis. 1991;179:194201.CrossRefGoogle Scholar
4.Huq, SF, Garety, PA, Hemsley, DR. Probabilistic judgements in deluded and non-deluded subjects. Q J Exp Psychol. 1988;40:801812.CrossRefGoogle ScholarPubMed
5.Linney, YM, Peters, ER, Ayton, P. Reasoning biases in delusion-prone individuals. Br J Clin Psychol. 1998;37:285302.CrossRefGoogle ScholarPubMed
6.Garety, PA, Freeman, D. Cognitive approaches to delusions: a critical review of theories and evidence. Br J Clin Psychol. 1999;38:113154.CrossRefGoogle ScholarPubMed
7.Von Domarus, E. The specific laws of logic in schizophrenia. In: Kasanin, JS, ed. Language and Thought in Schizophrenia. Berkeley, Calif: University of California Press; 1994:104114.Google Scholar
8.National Institute of Mental Health. Diagnostic Interview for Genetic Studies Training Manual. Bethesda, Md: NIMH; 1992.Google Scholar
9.Kay, SR, Opler, LA, Fiszbein, A. Positive and Negative Syndrome Scale Rating Manual. Toronto, Canada: Multi-Health Systems Inc; 1991.Google Scholar
10.Spitzer, RL, Endicott, J. Schedule for Affective Disorders and Schizophrenia-Lifetime Version. New York, NY: New York State Psychiatric Institute; 1997.Google Scholar
11.Eckblad, M, Chapman, LJ. Magical ideation as an indication of schizotype. J Consult Clin Psychol. 1983;51:215225.CrossRefGoogle Scholar
12.The Psychological Corporation. Wechsler Adult Intelligence Scale. 3rd ed. San Antonio, Tex: Harcourt Brace & Co; 1997.Google Scholar
13.Kraeplin, E. Dementia praecox. In: Cutting, J, Shepard, M, eds. The Clinical Roots of the Schizophrenia Concept. Cambridge, England: Cambridge University Press; 1997;1896:1524.Google Scholar
14.Arieti, S. Schizophrenia: the manifest symptomatology, the psychodynamic and formal mechanisms. In: Arieti, S, ed. American Handbook of Psychiatry. New York, NY: Basic; 1959:455484.Google Scholar
15.Henmi, Y. Prodromal symptoms of relapse in schizophrenic outpatients: retrospective and prospective study. Jpn J Psychiatry Neurol. 1993;47:453475.Google ScholarPubMed
16.Sapolsky, RM, Uno, H, Rebert, CS, Finch, CE. Hippocampal damage associated with prolonged glucocorticoid exposure in primates. J Neurosci. 1990;10:28972902.CrossRefGoogle ScholarPubMed
17.Yeragani, VK. The incidence of abnormal dexamethasone suppression in schizophrenia: a review and a meta-analytic comparison with the incidence in normal controls. Can J Psychiatry. 1990;35:128132.CrossRefGoogle Scholar
18.Bernstein, AS, Frith, CD, Gruzelier, JH, et al.An analysis of the skin conductance orienting response in samples of American, British, and German schizophrenics. Biol Psychol. 1982;14:155211.CrossRefGoogle ScholarPubMed
19.Gruzelier, JH, Venables, PH. Skin conductance, orienting activity in a heterogenous sample of schizophrenics. J Nerv Ment Dis. 1972;155:277287.CrossRefGoogle Scholar
20.Doering, S, Muller, E, Kopcke, W, et al.Predictors of relapse and rehospitalization in schizophrenia and schizoaffective disorder. Schizophr Bull. 1998;24:8798.CrossRefGoogle ScholarPubMed
21.Nuechterlein, KH, Dawson, ME, Gitlin, M, et al.Developmental processes in schizophrenic disorders: longitudinal studies of vulnerability and stress. Schizophr Bull. 1992;18:387425.CrossRefGoogle ScholarPubMed
22.Yui, K, Goto, K, Ikemoto, S, Ishiguro, T, Kamata, Y. Increased sensitivity to stress in spontaneous recurrence of methamphetamine psychosis: noradrenergic hyperactivity with contribution from dopaminergic hyperactivity. J Clin Psychopharmacol. 2000;20:165174.CrossRefGoogle ScholarPubMed
23.Dawson, ME, Nuechterlein, HK, Schell, AM. Electrodermal anomalies in recent onset schizophrenia: relationships to symptoms and prognosis. Schizophr Bull. 1992;18:295311.CrossRefGoogle ScholarPubMed
24.Hazlett, EA, Dawson, ME, Schell, AM, Nuechterlein, KH. Electrodermal activity as a prodromal sign in schizophrenia Biol Psychiatry. 1997;41:111113.CrossRefGoogle ScholarPubMed
25.Ventura, J, Nuechterlein, KH, Lukoff, D, Hardesty, JP. A prospective study of stressful life events and schizophrenic relapse. J Abnorm Psychol. 1989;38:407411.CrossRefGoogle Scholar
26.Wik, G, Wiesel, FA, Eneroth, P, Sedvall, G, Astrom, G. Dexamethasone suppression test in schizophrenic patients before and during neuroleptic treatment. Acta Psychiatr Scand. 1986;74:161167.CrossRefGoogle ScholarPubMed
27.Tandon, R, Mazzara, C, DeQuardo, J, et al.Dexamethasone suppression test in schizophrenia: relationship to symptomatology, ventricular enlargement, and outcome. Biol Psychiatry. 1991;29:953964.CrossRefGoogle ScholarPubMed
28.Grossberg, S. The imbalanced brain: from normal behavior to schizophrenia. Biol Psychiatry. 2000;48:8198.CrossRefGoogle ScholarPubMed
29.Hanlon, FM, Sutherland, RJ. Changes in adult behavior caused by neonatal limbic damage. Behav Brain Res. 2000;107:7183.CrossRefGoogle ScholarPubMed
30.Armony, JL, LeDoux, JE. How danger is encoded: toward a systems, cellular, and computional understanding of cognitive-emotional interactions in fear. In: Gazzaniga, M, ed. The New Cognitive Neurosciences. Cambridge, Mass: MIT Press; 2000:10671080.Google Scholar
31.Wright, IC, Rabe-Hesketh, S, Woodruff, PW, et al.Meta-analysis of regional brain volumes in schizophrenia. Am J Psychiatry. 2000;157:1625.CrossRefGoogle ScholarPubMed
32.Jonsson, SA, Luts, A, Guldberg-Kjaer, N, Ohman, R. Pyramidal neuron size in the hippocampus of schizophrenics correlates with total cell count and degree of cell disarray. Eur Arch Psychiatry Clin Neurosci. 1999;249:169173.Google ScholarPubMed
33.Easterbrook, JA. The effect of emotion on cue utilization and the organization of behavior. Psychol Rev. 1959;66:183201.CrossRefGoogle ScholarPubMed
34.Bruner, JS, Matter, J, Papnek, ML. Breadth of learning as a function of drive level and mechanization. Psychol Rev. 1995;62:110.CrossRefGoogle Scholar
35.Cornsweet, DM. Use of cues in the visual periphery under conditions of arousal. J Exp Psychol. 1969;80:1418.CrossRefGoogle Scholar
36.GRJ, Hockey. Effect of loud noise on attentional selectivity. Q J Exp Psychol. 1970;22:2836.Google Scholar
37.Combs, AW, Taylor, C. The effect of the perception of mild degrees of threat on performance. J Abnorm Soc Psychol. 1952;47:420424.CrossRefGoogle ScholarPubMed
38.Rockett, FC. Speed of form recognition as a function of stimulus factors and test anxiety. J Abnorm Soc Psych. 1956;53:137202.CrossRefGoogle ScholarPubMed
39.Baddeley, AD. Selective attention and performance in dangerous environments. Br J Psychol. 1972;63:537546.CrossRefGoogle ScholarPubMed
40.Bursill, AE. The restriction of peripheral vision during exposure to hot and humid conditions. Q J Exp Psychol. 1958;10:113129.CrossRefGoogle Scholar
41.Bacon, S.J.Arousal and the range of cue utilization. Q J Exp Psychol. 1974;102:8187.CrossRefGoogle ScholarPubMed
42.Berkun, MM, Bialek, HM, Kern, RP, Yagi, K. Experimental studies of psychological stress in man. Psychol Monogr. 1962;76:534.CrossRefGoogle Scholar
43.Weltman, G, Egstrom, GH. Perceptual narrowing in novice divers. Human Factor. 1967;8;499506.CrossRefGoogle Scholar
44.Freeman, D, Garety, PA, Phillips, ML. An examination of hypervigilance for external threat in individuals with generalized anxiety disorder and individuals with persecutory delusions using visual scan paths. Q J Exp Psychol. 2000;53A:549567.CrossRefGoogle Scholar
45.McKentin, R, Ward, PB, Catts, SV, Mattrick, RP, Bell, JR. Changes in auditory selective attention and event-related potentials following oral administration of D-amphetamine in humans. Neuropsychopharmacology. 1999;21:380390.CrossRefGoogle Scholar
46.Combs, AW, Taylor, C. The effect of the perception of mild degrees of threat on performance. J Abnorm Soc Psychol. 1952;47:420424.CrossRefGoogle ScholarPubMed
47AAL, D'Alfonso, Van Honk, J, Herman, E, Postma, A, EHF, de Haan. Laterality effects in selective attention to threat after repetitive transcranial magnetic stimulation at the prefrontal cortex in female subjects. Neurosci Lett. 1999;280:195198.Google Scholar