Анатомия страха

Как ваш мозг формирует самые значительные воспоминания? Исследования страха, проводимые на крысах, существенно помогали нам это изучить. Хотя страх людей и крыс являются разными вещами, способы, с помощью которых крыса и человеческий мозг и тело отвечают на опасность, подобны по своей сути. По причине того, что есть стержень многих человеческих патологий, от панических приступов до посттравматического стрессового нарушения, прорыв в понимании системы страха мозга может привести к новым путям лечения этих нарушений.

Сердцевина системы страха мозга обнаружена в области, называемой "амигдала" (“amygdala”). Эта область получает информацию от всех органов чувств и в свою очередь контролирует разнообразные цепочки, которые вызывают усиление сердцебиения, потение ладоней, урчание в желудке, напряжение мышц и гормональные выбросы, которые характеризуют "состояние боязни".

Амигдала крысы отвечает на естественные природные опасности (крысы боятся котов без специального обучения этому) и учится новым опасностям (звукам, знакам и запахам, которые появляются в присутствии котов и других угроз). Посредством изучения способов, с помощью которых мозг запоминает эти раздражители, такие как звуки, предшествующие опасности, наша система изучения страха и памяти в целом, объяснялась на основе исследования крыс.

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