Check again. Nebraska, Alabama, and Idaho have laws stating that it's about 20 weeks. (And about 16 other states are considering similar laws.)
Laws aren't science. They could pass resolutions declaring that light is composed by little pixies riding unicorns if they wanted. As it is, they are wrong. Thalamocortical synapsing is only just occurring ~25-26 weeks gestation.
The development of the subplate and thalamocortical connections in the human foetal brain - Kostović - 2010 - Acta Paediatrica - Wiley Online Library
During the 22 and 23 PCW (preterm infants with extremely low birth-weight), the majority of thalamocortical axons reside in the superficial subplate of sensory and associative (Fig. 2C) cortical regions (1,11,1315), whereas few axons have already entered the cortical plate. This dual pattern of thalamocortical connectivity with transient (to the subplate) and permanent (to the cortical plate) component was described as a salient feature of the preterm cortex (2,12). Thus, preterm infants at 2223 PCW do possess an anatomical substrate for extrinsic cortical input from both sensory and associative thalamic nuclei. Of all the layers of the foetal cortex, the subplate is the most active in the generation of action potentials (30,38,52) and contains the synaptic machinery for the most well-known cortical neurotransmitter systems, including monoaminergic and cholinergic arousal and activating systems (3,53). Thus, the cortical system of very young preterm infants is on the verge of transition from an endogeneous spontaneous processing (30,42) to a sensory-expectant functioning (2,12). The presence of thalamocortical synapses in the subplate is a necessary, but not sufficient requirement for the conscious cortical processing, which was emphasized in attempts to explain cortical mechanisms of responding to a painful stimulation (3,5,6,18). The general agreement seems to be that due to the functional immaturity of thalamocortical connections, there is no cortical processing and no feeling of pain before 23 PCW, i.e. 25 weeks of gestation (7).
And don't forget that video of "The Silent Scream" by the abortionist who had a "come to Jesus" moment and became pro-life after making the video. It showed a sonogram of a baby being aborted and how it tried over and over and over again to get away from the tool that would eventually cause it's death.
What about it?
It always strikes me as somewhat hypocritical that often the very people who wildly protest the bludgeoning of baby harp seals are perfectly all right with dismemberment of babies our own species.
Ok.
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