相关实验视频

Updated: Jun 9, 2025

Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging

Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging

Published on: September 12, 2011

了解自闭症异质性:确定临床子组和神经解剖学偏差

Jente Meijer¹, Bruno Hebling Vieira¹, Camille Elleaume¹

¹Methods of Plasticity Research, Department of Psychology, University of Zurich.

Journal of psychopathology and clinical science

|October 31, 2024

概括

研究人员根据临床症状确定了两个自闭症子组,发现了局部的神经解剖学差异. 然而,在小组内仍然存在显著的异质性,这凸显了对自闭症亚型的进一步研究的需要.

科学领域:

神经科学是一个神经科学.
精神病学是一个精神病学.
遗传学遗传学是一个

背景情况:

自闭症谱系障碍 (ASD) 在行为和神经解剖学中呈现出显著的异质性,使研究和干预开发复杂化.
识别同质子组是解决这种异质性和理解个体差异的关键策略.
以前的研究已经探索了自闭症的神经解剖学变异,但将临床和神经解剖学数据集成为子组分析仍然至关重要.

研究的目的:

通过将临床特征集群与大脑结构的规范建模相结合,分析自闭症的临床和神经解剖学异质性.
根据症状概况,在自闭症患者群体中识别出不同的临床子组.
评估这些临床子组是否表现出更大的神经生物学同质性,并提高诊断分类准确性.

主要方法:

应用基于模型的集群对来自499名自闭症个体的自闭症诊断观察表 (ADOS) 数据进行了应用,以确定临床子组.
从自闭症脑成像数据交换 (ABIDE) 数据集中利用皮层厚度 (CT) 和亚皮层体积的规范建模 (N 自闭症 = 690,N NAI = 744).
我们比较了所识别的子组和整体自闭症组之间的神经解剖学偏差,并使用监督机器学习来确定分类的准确性.

主要成果:

确定了两个主要的临床子组,主要在限制性和重复性行为 (RRB) 中存在差异.
与一般自闭症组相比,这两小组在局部神经解剖学偏差方面均性增加.
高RRB的小组有小脑体积偏差,而低RRB的小组显示CT偏差在后中心环和状皮质.

结论:

基于RRB的临床分组揭示了自闭症内的局部神经生物学差异.
尽管分组,但在小组内仍然存在相当大的异质性,如机器学习分类准确度没有提高所证明的.
未来的研究需要更大的样本和综合的神经解剖学聚类,以进一步减少异质性,并使自闭症的定制干预成为可能.

更多相关视频

Strategies for Assessing Autistic-Like Behaviors in Mice

Strategies for Assessing Autistic-Like Behaviors in Mice

Published on: September 20, 2024

Rapid Detection of Neurodevelopmental Phenotypes in Human Neural Precursor Cells NPCs

Rapid Detection of Neurodevelopmental Phenotypes in Human Neural Precursor Cells NPCs

Published on: March 2, 2018

相关概念视频

Autism Spectrum Disorder

Autism Spectrum Disorder

Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.

Modeling in Therapy

Modeling in Therapy

Modeling, a key technique in therapy, uses observational learning to help clients acquire and practice new skills by watching therapists demonstrate desired behaviors. This approach, rooted in Albert Bandura's concept of vicarious learning, plays a significant role in therapeutic interventions for various psychological conditions, including social anxiety, ADHD, and depression.
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...