海馬體

出自維基百科,自由嘅百科全書
跳去導覽 跳去搵嘢
一個人腦嘅解剖圖解;有色嗰舊就係海馬體。

海馬體hippocampus)係個邊緣系統(limbic system)嘅一個重要部份,背側(dorsal)嘅部份同多種記憶功能好有拏褦。

海馬體前部(anterior)嘅一個重要功能係處理趨近定遠離衝突(approach-avoidance conflict)-趨近定遠離衝突係一種情況,指隻動物感知到一個刺激,個刺激可以係犒賞、但又有可能係行為懲罰,例如佢離遠見到隻動物,隻動物有可能係同伴(犒賞)又有可能係獵食者(行為懲罰),搞到隻動物想趨近隻動物但同時又想遠離佢[1];如果海馬體前部受到啟動,隻動物一般會進入慎重趨近(cautious approach)狀態,即係話佢會作出趨近,但同時將注意力變成集中於留意周圍有冇危險,以便一旦真係有危險就可以即刻發覺同進入戰鬥定逃走(fight-or-flight)狀態[2][3]

睇埋[編輯]

[編輯]

  1. O'Neil, E. B., Newsome, R. N., Li, I. H., Thavabalasingam, S., Ito, R., & Lee, A. C. (2015). Examining the role of the human hippocampus in approach-avoidance decision making using a novel conflict paradigm and multivariate functional magnetic resonance imaging (PDF). Journal of Neuroscience, 35(45), 15039-15049.
  2. Kelly, D. (1982). The Neuropsychology of Anxiety: An Enquiry into the Functions of the Septo-Hippocampel System. By Jeffrey A. Gray Oxford University Press. 1982. Pp 548.£ 27.50. The British Journal of Psychiatry, 141(6), 634-634.
  3. McNaughton, N., & Corr, P. J. (2008). The neuropsychology of fear and anxiety: A foundation for Reinforcement Sensitivity Theory (PDF).