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Thread: Memories and behaviors passed down in our DNA

  1. #1 Memories and behaviors passed down in our DNA 
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    ”From a translational perspective, our results allow us to appreciate how the experiences of a parent, before even conceiving offspring, markedly influence both structure and function in the nervous system of subsequent generations."-Dr Brian Dias, from the department of psychiatry at Emory University.

    Makes sense since our children are made of the essence of our lives.

    Professor Marcus Pembrey, a paediatric geneticist at University College London, said the work provided “compelling evidence” for the biological transmission of memory.
    He added: “It addresses constitutional fearfulness that is highly relevant to phobias, anxiety and post-traumatic stress disorders, plus the controversial subject of transmission of the ‘memory’ of ancestral experience down the generations."

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    Makes sense to me considering the human intent to evolve adapt and survive from generation to generation. Interesting to witness the transformation of consciousness, memory, into physical formations, encoding, medias, and then converted into again consciousness. Conversion of consciousness into formations is something i watch very closely.


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    Forum Masters Degree DianeG's Avatar
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    I think you have to be cautious or specific about how you use the word "memory" in that sense. Epigenetic changes resulting from trauma, stress, deprivation arent the same thing as actually somehow incorporating/transferring an actual memory of an experience or an event to the next generation.


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    Quote Originally Posted by DianeG View Post
    I think you have to be cautious or specific about how you use the word "memory" in that sense. Epigenetic changes resulting from trauma, stress, deprivation arent the same thing as actually somehow incorporating/transferring an actual memory of an experience or an event to the next generation.
    But the fear is a memory, and it is instilled through experience of the parents and recorded into their genes. The smell triggers the memory in the young, the memory of the fear. The knowledge that it will hurt them is coming from within the memory of their parent's experiences. Passed down in one generation.
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    I want to see a lot of very specific and carefully double blinded experimental evidence before I'll buy this one. This claim smacks of lemarkianism. Extraordinary claims require extra ordinary evidence. In essence, I call "Bullshirt".
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    Forum Masters Degree DianeG's Avatar
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    Quote Originally Posted by Sealeaf View Post
    I want to see a lot of very specific and carefully double blinded experimental evidence before I'll buy this one. This claim smacks of lemarkianism. Extraordinary claims require extra ordinary evidence. In essence, I call "Bullshirt".
    No, it isn't total bull, and it isn't lamarkian, really, it's still turning genes on and off with things like methylation. What was surprising about it was the specificity in it, that it could affect preferences for, or avoidance of things, in mice. Which superficially, would appear as though somehow the mouse was remembering the actual event that his parent or grandparent mouse had experienced.

    How epigenetic memory is passed through generations: Sperm and eggs transmit memory of gene repression to embryos -- ScienceDaily

    Fearful memories haunt mouse descendants : Nature News & Comment

    http://www.newscientist.com/article/...nerations.html
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    Forum Masters Degree DianeG's Avatar
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    Quote Originally Posted by emilito View Post
    But the fear is a memory, and it is instilled through experience of the parents and recorded into their genes. The smell triggers the memory in the young, the memory of the fear. The knowledge that it will hurt them is coming from within the memory of their parent's experiences. Passed down in one generation.
    No, fear is an emotion, a driver of behavior.

    I seriously doubt they have in their brains a memory of the event that their parents experienced. I also doubt that this effect would occur with a completely novel, learned experience of the parent mouse. That is, there has to to already be the gene to prefer or avoid something, which is getting amplified or suppressed.
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