Neural Mechanisms of Social Attribution From Faces
试验速览
- 阶段
- 不适用
- 状态
- Enrolling By Invitation
- 入组人数
- 100
- 试验地点
- 2
- 主要终点
- Neuronal population activity
研究概览
简要总结
The purpose of this study is to examine how the brain processes faces, which are some of the most important stimuli that we view, process, and make decisions about as we go through daily life. This project examines the dynamics of where and when in the brain information conveyed by faces is represented, how such information is modulated by context and goals, and how such information is used to make decisions about faces.
详细描述
Despite the importance of faces for decision making, little is known about the neural mechanisms of how information conveyed by faces is extracted and used to inform decisions we make. The goal of this research is to develop a circuit-level understanding of face processing. As part of this study, investigators will conduct experiments that utilize the rare opportunity to record in-vivo from human single neurons simultaneously in multiple brain areas in patients undergoing treatment for drug resistant epilepsy.
Researchers will investigate three overarching hypotheses on the neural substrate of face processing. Aim 1: To determine the fast temporal dynamics of face processing. Aim 2: To modulate face-related neural activity with Contextual Information. Aim 3: To test the causal relevance of face-related neural activity.
The expected outcomes of this work are a characterization of how neural representations of faces are formed, how they enable making decisions about faces, and how the face-related neural activity is modulated by context.
Participants in this study are patients undergoing invasive monitoring for suspected focal epilepsy with depth electrodes. Subjects will conduct a variety of cognitive tests on a computer placed in front of them during their hospital stay. Participating hospitals in this study are Cedars-Sinai and Stanford Hospital.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —(Adult, Older Adult)
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Intractable epilepsy, undergoing invasive monitoring
- •Full Scale Intelligence Quotient > 70
- •Ability to comprehend and perform simple behavioral tasks by pressing buttons on laptop computer in response to questions.
排除标准
- •Determination by clinicians and investigators that a patient is unable to complete the behavioral tasks required for the protocol due to either cognitive limits, psychological limits, or pain.
研究组 & 干预措施
Behavioral Testing
Behavioral testing and neuronal recordings
干预措施: Cedrus RB-844 response pad; Adtech Behnke-Fried micro-electrodes; Neurolynx electrophysiology system; Blackrock Cerestim stimulator (Behavioral)
结局指标
主要结局
Neuronal population activity
时间窗: 5 years
Proportion of experiment sessions in which representations of decision-related aspects of faces emerged in subjects that successfully performed the task
Contextual modulation
时间窗: 5 years
Percentage of neurons that carry face-related information whose activity was modulated by context.
Effect of electrical stimulation
时间窗: 5 years
Proportion of experiment sessions in which electrical stimulation modulated face-based decision making.
次要结局
未报告次要终点
研究者
Adam Mamelak, MD
Professor of Neurosurgery
Cedars-Sinai Medical Center
