Impaired sensorimotor gating in schizophrenia with deficit and with nondeficit syndrome.

Impaired sensorimotor gating in schizophrenia with deficit and with nondeficit syndrome.
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精神分裂症伴缺陷和非缺陷综合征的感觉运动门控受损。

DOI:
10.4414/smw.2002.09873
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发表时间:
2002
影响因子:
2.9
通讯作者:
F. Vollenweider
F. Vollenweider
中科院分区:
医学4区
文献类型:
--
作者:
K. Ludewig;F. Vollenweider

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正在研究的问题 前脉冲抑制(PPI)是当强烈的惊吓刺激之前有一个几乎检测不到的前脉冲时,惊吓反射的正常抑制。PPI已经被提出来反映感觉运动门控或过滤的测量。在精神分裂症的各种前脉冲条件下发现PPI缺陷。本研究的目的是调查是否赤字,特别是前脉冲条件与精神病理综合征。 方法 使用柯克帕特里克的时间表将精神分裂症患者分为缺陷综合征和非缺陷综合征患者。在评估PPI(30、60、120、240和2000 ms刺激间隔)的声惊吓范例中,对伴有缺陷综合征的精神分裂症(N = 46)、伴有非缺陷综合征的精神分裂症(N = 21)和对照组(N = 44)进行比较。使用混合ANOVA分析PPI数据。 结果 精神分裂症与赤字综合征表现出PPI赤字在60毫秒的前脉冲条件和减少促进在2000毫秒的前脉冲条件,而PPI在非赤字综合征患者在240毫秒的前脉冲条件受损。 结论 PPI在缺陷和非缺陷患者中的不同模式似乎与精神分裂症的异质性有关。因此,这项研究可以解释精神分裂症领域以前PPI研究中的各种结果。
QUESTIONS UNDER STUDY Prepulse inhibition (PPI) is the normal suppression of the startle reflex when the intense startling stimulus is preceded by a barely detectable prepulse. PPI has been proposed to reflect a measure of sensorimotor gating or filtering. Deficits in PPI has been found in schizophrenia in various prepulse conditions. The aim of this study was to investigate whether deficits in particular prepulse conditions relate to psychopathological syndromes. METHODS Schizophrenia was subgrouped into patients with deficit and with nondeficit syndrome using the schedule of Kirkpatrick. Schizophrenia with deficit syndrome (N = 46), schizophrenia with nondeficit syndrome (N = 21), and controls (N = 44) were compared in an acoustic startle paradigm assessing PPI (30, 60, 120, 240 and 2000 ms interstimulus intervals). A mixed ANOVA was used to analyse the PPI-data. RESULTS Schizophrenia with deficit syndrome showed a PPI-deficit in the 60 ms prepulse condition and a reduced facilitation in the 2000 ms prepulse condition, whereas PPI in patients with nondeficit syndrome was impaired in the 240 ms prepulse condition. CONCLUSIONS The different patterns of PPI in deficit and nondeficit patients appear to relate to the heterogeneity of schizophrenia. Thus, this study may explain the various findings in previous PPI studies in the field of schizophrenia.
DOI: 10.1001/archpsyc.1990.01810140081011
发表时间: 1990-02
影响因子: --
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