通过集群深度学习分类器分类神经精神障碍解释
概括
研究人员使用大脑活动模式确定了5种不同的精神分裂症 (SZ) 亚型. 这种新的方法揭示了网络连接和症状严重程度的差异,为个性化治疗铺平了道路.
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.
- 人工智能的人工智能
背景情况:
- 神经精神疾病需要更好的诊断和治疗策略.
- 从静止状态fMRI的动态功能网络连接 (dFNC) 是研究随时间推移的大脑网络相互作用的关键.
- 当前的研究经常使用深度学习或集群,但很少将两者结合起来.
研究的目的:
- 开发一种新的方法来分类患有神经精神疾病的个体,特别是精神分裂症 (SZ).
- 为了利用可解释的深度学习和交叉验证来进行可靠的亚型识别.
- 调查已识别的亚型,大脑网络相互作用和症状严重程度之间的关系.
主要方法:
- 在dFNC数据上训练了一个可解释的深度学习分类器,以区分SZ个体与对照.
- 在将SZ与对照区分时,达到79%的测试准确度.
- 采用交叉验证以根据网络连接模式和症状严重程度识别5种不同的SZ亚型.
主要成果:
- 确定了5种精神分裂症亚型,每一种与对照组相比都有独特的dFNC差异.
- 观察到网络相互作用的明显变化,包括视觉,皮质下,感觉运动,听觉和小脑网络.
- 在已识别的亚型中发现了负症状得分的统计学上显著差异.
结论:
- 新型分类方法为理解和表征精神分裂症提供了一种新的方法.
- 这些亚型是由不同的大脑连接模式定义的,与不同症状严重程度相关.
- 这项工作有可能推进精神分裂症和其他神经精神疾病的个性化医疗.
相关概念视频
01:17Classification of Illness
9.4K
The meaning of illness is individualized to each person who experiences an alteration in health. In contrast, disease is a medical term indicating a pathological change in the structure and function of the body or mind. It is a condition that has specific symptoms and boundaries.
An illness is a response to a disease in which the person's level of functioning is changed compared with a previous level. The general classification of illness includes acute and chronic.
Acute illness is severe...
An illness is a response to a disease in which the person's level of functioning is changed compared with a previous level. The general classification of illness includes acute and chronic.
Acute illness is severe...
9.4K
01:30Classification of Neurotransmitters
5.3K
Neurotransmitters play a crucial role in the communication between neurons in the autonomic nervous system. Neurons in the autonomic nervous system can be cholinergic or adrenergic depending on the neurotransmitters synthesized. Cholinergic neurons use acetylcholine as their primary neurotransmitter. This includes all the preganglionic fibers of the sympathetic and pre- and postganglionic fibers of the parasympathetic nervous systems. In addition, neurons of the somatic nervous system also use...
5.3K
01:26Classification of Systems-I
742
Linearity is a system property characterized by a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
742
01:31Classification of Systems-II
651
Continuous-time systems have continuous input and output signals, with time measured continuously. These systems are generally defined by differential or algebraic equations. For instance, in an RC circuit, the relationship between input and output voltage is expressed through a differential equation derived from Ohm's law and the capacitor relation,
651
01:24Prosopagnosia
1.3K
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
1.3K
01:29Intellectual Disability
1.1K
Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...
1.1K