中級 1799 タグ追加 保存
動画の字幕をクリックしてすぐ単語の意味を調べられます!
単語帳読み込み中…
字幕の修正報告
The human body is a wonder, but perhaps the most curious and quintessential aspect of the human experience is the orgasm.
The body's sexual response is typically broken down in four stages:
excitement, plateau of arousal, orgasm, and resolution.
Following arousal, the brain stimulates bloodflow to the genitals, your heartbeat and breathing increase,
and the central nervous system is fully engaged, sending signals of enjoyment to the brain's reward system.
These thousands of nerve endings constantly relay pleasure signals to the brain, resulting in an orgasm.
For men, the orgasm includes rapid contractions of the anal sphincter, the prostate, and the muscles of the penis.
In conjunction with ejaculation, which sees the release of sperm and other seminal fluid,
the whole process for men involves around three to ten seconds of intense pleasure.
This is followed by a refractory period for minutes to hours in which another orgasm cannot be achieved.
Women, on the other hand, do not experience a refractory period,
allowing them to experience multiple consecutive orgasms.
On avarage, these last for around twenty seconds (but sometimes much longer) and consist of
rhythmic contractions between the uterus, vagina, anus, and pelvic muscles.
But it's the brain that takes control -- or rather, lack thereof -- during orgasm.
Using functional MRI scans, scientists are able to see brain activity in over 30 discrete regions.
It's flooded with the anticipatory and feel-good chemical dopamine which makes you crave the feeling again.
This is in tandem with the release of oxytocin; a hormone that mediates bonding and love between mates.
PET scans show (surprisingly) that brain activity during an orgasm is the same between men and women.
In both genders, the lateral orbitofrontal cortex is turned off which controls self-evaluation, reason, and control.
Makes sense, as you often lose control during orgasm.
This shuts down fear and anxiety, which is seen as the most essential aspect leading up to orgasm.
The relaxation of the amygdala and hippocampus in women further reduce emotions,
producing a trance-like state, while in men, it dampens aggressiveness
Many areas of a woman's brain are shut down completely during an orgasm.
These effects are less striking in men, likely because of the shorter duration
and difficulty with measuring during brain scan.
In women, an area called the periaqueductal gray (or PAG) is activated, stimulating the flight or fight response
while the cortex -- which is associated with pain -- lights up,
suggesting that there is a connection between pain and pleasure.
Following this climax and muscle contraction, the body experiences deep relaxation,
and heart rate slows to a resting pace.
Who knew science could be so sexy?
Got a burning question you want answered? Ask them in the comments or on Facebook and Twitter, and subscribe for more weekly science videos.
コツ:単語をクリックしてすぐ意味を調べられます!

読み込み中…

The Science of Orgasms

1799 タグ追加 保存
簡宇謙 2016 年 7 月 21 日 に公開
お勧め動画
  1. 1. クリック一つで単語を検索

    右側のスプリクトの単語をクリックするだけで即座に意味が検索できます。

  2. 2. リピート機能

    クリックするだけで同じフレーズを何回もリピート可能!

  3. 3. ショートカット

    キーボードショートカットを使うことによって勉強の効率を上げることが出来ます。

  4. 4. 字幕の表示/非表示

    日・英のボタンをクリックすることで自由に字幕のオンオフを切り替えられます。

  5. 5. 動画をブログ等でシェア

    コードを貼り付けてVoiceTubeの動画再生プレーヤーをブログ等でシェアすることが出来ます!

  6. 6. 全画面再生

    左側の矢印をクリックすることで全画面で再生できるようになります。

  1. クイズ付き動画

    リスニングクイズに挑戦!

  1. クリックしてメモを表示

  1. UrbanDictionary 俚語字典整合查詢。一般字典查詢不到你滿意的解譯,不妨使用「俚語字典」,或許會讓你有滿意的答案喔