单词	hypervigilance
释义	hypervigilance noun hy·​per·​vig·​i·​lance ˌhī-pər-ˈvi-jə-lən(t)s  variants or hyper-vigilance : extreme or excessive vigilance : the state of being highly or abnormally alert to potential danger or threat A person suffering from PTSD may have sleep disturbances, irritability, hypervigilance, heightened startle responses and flashbacks of the original trauma. Ellen L. Bassuk et al. One common trait among fearful fliers is hypervigilance; they often spend the entire trip watching the flight attendants, analyzing the chime system, and assessing the sounds of the engines. Nancy J. Perry Word History First Known Use 1887, in the meaning defined above Medical Definition hypervigilance noun hy·​per·​vig·​i·​lance -ˈvij-ə-lən(t)s  : extreme or excessive vigilance : the state of being highly or abnormally alert to potential danger or threat A person suffering from PTSD may have … hypervigilance, heightened startle responses and flashbacks Ellen L. Bassuk et al.
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