Originally
posted by
BobbyATA:
cyref I want you to know I find your post offensive and not worthy of a reply.
well that's just peculiar! At some point, the conversation just stops, huh? okBye
Originally
posted by
TheORKINMan:
I call bullfluff on the previous post. No one is talking about zygotes or embryos. I'm talking about a baby with its own brain. Once it is firing it's own neurons it is NOT just the woman's body anymore. If anything it is the women who are playing the control freaksin this argument by saying they have an inherent right to kill someone else for no other reason then they feel like it. I realize most women who have abortionsdont think that way but to codify it as an absolute right to kill no matter what is insane.
But your criteria does include zygotes and embryos.
Wall Of Text explains:
Brain development begins with the formation and closure of the neural tube, the earliest nervous tissue that looks like a fat earthworm stretched out along the entire back of the embryo. The neural tube forms from the neural plate, which begins forming about sixteen days after conception. This plate lengthens and starts folding up, forming a groove at around eighteen days, which then begins fusing shut into a tube around twenty-two days post-conception. By 27 days, the tube is fully closed and has begun its transformation into the brain and spinal cord of the embryo.
Generally speaking, the central nervous system (which is composed of the brain and the spinal cord) matures in a sequence from "tail" to head. In the fifth week after conception, the first synapses begin forming in a fetus's spinal cord. By the sixth week, these early neural connections permit the first fetal movements--spontaneous arches and curls of the whole body--that researchers can detect through ultrasound imaging.
These abilities are controlled by the brainstem, which sits above the spinal cord but below the higher, more recently-evolved cerebral cortex. The brainstem is responsible for many of our body's most vital functions--heart rate, breathing, and blood pressure. It is largely mature by the end of the second trimester, which is when babies first become able to survive outside the womb.
Last of all to mature is the cerebral cortex, which is responsible for most of what we think of as mental life--conscious experience, voluntary actions, thinking, remembering, and feeling. It has only begun to function around the time gestation comes to an end. Premature babies show very basic electrical activity in the primary sensory regions of the cerebral cortex--those areas that perceive touch, vision, and hearing--as well as in primary motor regions of the cerebral cortex. In the last trimester, fetuses are capable of simple forms of learning, like habituating (decreasing their startle response) to a repeated auditory stimulus, such as a loud clap just outside the mother's abdomen. Late-term fetuses also seem to learn about the sensory qualities of the womb, since several studies have shown that newborn babies respond to familiar odors (such as their own amniotic fluid) and sounds (such as a maternal heartbeat or their own mother's voice).
In spite of these rather sophisticated abilities, babies enter the world with a still-primitive cerebral cortex, and it is the gradual maturation of this complex part of the brain that explains much of their emotional and cognitive maturation in the first few years of life.
Now the question is, if your criteria is "firing it's own neurons" do you mean the neural capacity equivalent to jerking a frog's leg in a science lab? Certainly you are not including the first ~month of pregnancy, prior to the closure of the neural tube?
And in re: to the contraception issue Melinda Gates recently gave a thoughtful presentation on TEDtalks
http://youtu.be/2BOTS9GAjc4