When we first recognize its existence?

Probably the first time we are aware that we exist, even in the womb, before to be born. But it's hard to remember, because at this moment we have no concepts with which impressions are stored in memory. Consciousness in the fetus appears approximately in the second trimester, and tactile sensitivity - on the 7th week: fruit for the first time react to the touch of the hair to his cheek. By 17 weeks of tactile sensitivity extends almost the entire body. At week 16, the fetus turns when maternal belly exposed to strong light, he begins to be afraid at loud sounds. I wonder if that plays rock music, the child violently pushed, if it sounds quiet melody, the reaction is reversed. It is unlikely that the fetus hears music; Perhaps he feels physically sound wave and responds to it. It's like a feeling of noise from loud music from next door: you hear the hooting of bass, but do not distinguish melodies. From 12 weeks the baby can already frown, squint eyes, and at 14 weeks trying to laugh or complains. When the term of 24 weeks of the child's behavior indicates the emergence of a true (cognitive) thinking: he smiles and grimaces, angry. Thus, there is evidence that when the amniocentesis under ultrasound guidance 24-week fetus, which was a random shot needle, the whole body turned away from her, to determine the position of the needle by hand, and beat on it with his hand. Scientists theorize that, showing concern, the fetus thinks. Also in the 24-week fetus, alarmed, sucks his thumb - sometimes so much that it blisters appear. At 26 weeks the fetus in the uterus is doing interesting movements, for example rotates forward. It is possible that this is a conscious movement, and therefore the child already thinks.