ELECTROPHYSIOLOGY OF THE PREFRONTAL CORTEX

前额皮质的电生理学

• 批准号: 6392291
• 负责人: PATRICIO O'DONNELL
• 金额: $ 19.72万
• 依托单位: ALBANY MEDICAL COLLEGE
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2003-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6392291
• 关键词: electrophysiology; experimental brain lesion; frontal lobe /cortex; glutamate receptor; hippocampus; isolation /deprivation; laboratory rat; neural transmission; neurotransmitter agonist; neurotransmitter antagonist; schizophrenia

DESCRIPTION (Adapted from applicant's abstract): The interactions among the prefrontal cortex, hippocampus and dopaminergic systems are thought to play a role in schizophrenia. However, the nature of such interactions from a physiological perspective are not yet fully understood. Establishing how a hippocampal deficit impacts on physiological measures of prefrontal neuron activity and how dopamine modulates these interactions may provide a significant contribution towards establishing a comprehensive animal model of this devastating disorder. In this proposal, plans are presented to assess the impact of a number of manipulations in the hippocampal afferents to prefrontal cortical neurons intracellularly recorded in vivo: 1) determining the input responsible for the transitions to the active periods in prefrontal cortical neurons exhibiting a slow oscillation in their membrane potential and cell firing; 2) establishing the role of hippocampal afferents on such oscillations and their source input by assessing the effects of hippocampal stimulation and by performing similar experiments in animals with a hippocampal lesion; 3) assessing the effects of a neonatal hippocampal lesion on these interactions in adult animals as an initial attempt of testing the hypothesis of a developmental hippocampal disturbance resulting in hypofrontality; 4) testing the effects of rearing animals in social isolation on these interactions, with the aim to determine the actions of an environmentally-induced brain deficit that in many respects exhibits alterations resembling schizophrenia; and, 5) determining the glutamate receptor subtype involved in hippocampal-prefrontal interactions by studying the actions of glutamate receptor agonists and antagonists on synaptic responses in prefrontal cortical cells recorded in vivo.

描述（改编自申请人的摘要）