Single Unit Neurophysiological Architecture of the Neocortex (SUNAN)
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 入组人数
- 50
- 主要终点
- Single units isolated
研究概览
简要总结
The SUNAN (Single Unit Neurophysiological Architecture of the Neocortex) study aims to understand how individual brain cells called neurons interact and communicate, and how the neurons can be affected in neurological disease. Using an advanced digital probe called the "Neuropixels probe," which is as thin as a human hair, the investigators can record electrical activity from individual neurons on the outmost layer of the brain (cerebral cortex). This electrical (neurophysiological) activity recording technique allows the investigators to isolate and monitor single-neuron activity from the human brain during planned neurosurgical operations in real time.
详细描述
The SUNAN study plans to recruit fifty patients scheduled for brain surgery, such as for tumour removal or operations that involve the fluid (cerebrospinal fluid) within the brain, at the National Hospital for Neurology and Neurosurgery. Participation is voluntary, and the suitability will be assessed by the participant's neurosurgeon.
Patients who participate in SUNAN will undergo their planned neurosurgery as per standard of care with the additional step of a neurophysiological recording made from the brain using a Neuropixels probe. This recording step and the data collected will not affect the rest of the patients care which will proceed in the usual way and the data is collected solely for scientific purposes.
The investigators believe that the insights gained from these electrical recordings from individual neurons will deepen our understanding of brain function and potentially lead to improved diagnosis and treatment of neurological diseases.
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
- •Aged 18 years and over.
- •Documented informed consent to participate.
- •Undergoing a transcranial neurosurgical procedure at the National Hospital for Neurology and Neurosurgery (NHNN) in which part of the cerebral cortex will be:
- •Resected e.g., as removal of part of a tumour or epilepsy focused. Or
- •Transgressed as part of the surgical approach to reach a deeper target e.g., resection of a deep tumour or cavernoma.
- •Transgressed by the passage of a surgical implant e.g., a ventriculoperitoneal shunt catheter or deep brain stimulation electrode.
- •Surgery felt to be technically suitable for the neurophysiological recording technique by the Chief Investigator and responsible Consultant Neurosurgeon. For example, participants having surgery in an unusual position may present problems for the neurophysiological recording step.
排除标准
- •Participants who lack the capacity to give informed consent.
- •Participants who are pregnant or breast feeding at the time of surgery.
- •Participants deemed to be unsuitable for recruitment to the study by the responsible Consultant Neurosurgeon. If in the view of the treating consultant involvement in the study would compromise the patient's surgery or present an unacceptable risk to them, they will not be recruited to the study. For example, if the participant does not meet the standard of care preoperative checks.
- •Concern from the Consultant Neurosurgeon or treating Anaesthetist that there would be an unreasonable burden on the patient to participate in the study. For example, risk due to increased length of anaesthetic time.
- •For participants requiring anaesthesia for their pre-planned brain surgery, an American Society of Anaesthesiologists (ASA) physical status classification system score of 4 and higher.
- •Participants unable to understand English sufficiently well to read the patient facing documents and consent in English.
- •Participants not undergoing their treatment through National Health Service (NHS) care (i.e. private patients are excluded).
结局指标
主要结局
Single units isolated
时间窗: Timepoint - At time of planned neurosurgery.
Outcome name - Descriptive reporting on the number of well isolated single neuronal units observed during neurophysiological recording of the brain during planned neurosurgery. Metric/method of measurement - Neurophysiological activity of the brain will be described through analysis of electrical activity recorded. The detection of spikes represents depolarisation of single neuronal units ("single-units"). Well isolated single-units will be defined by clustering metrics, interval spike interval violations and/or other neurophysiological analysis. Descriptive reporting will include the number of individual units recorded, their spiking rates and correlation.
次要结局
- Experience of using large scale single-unit recording(Through study completion, an average of 1 year)
- Iterations made to the surgical and electrophysiological technique(Through study completion, an average of 1 year)
- Potential refinements in technique(Through study completion, an average of 1 year)