9 Matching Annotations
  1. May 2020
    1. assessed prospectively in men and women smokers before and then day-by-day

      No control group? This study tells me literally nothing. It just demonstrates that the effects of tobacco are not the same as nicotine. That was already obvious.

    1. Hippocampal size of nonusers reflects a direct relationship to memory function; the smaller the hippocampus, the poorer the memory function. Individuals who use marijuana and tobacco show an inverse relationship, i.e., the smaller the hippocampus size, the greater memory the function. Furthermore the number of nicotine cigarettes smoked per day in the marijuana and nicotine using group appears to be related to the severity of hippocampal shrinkage. The greater the number of cigarettes smoked per day, the smaller the hippocampal volume and the greater the memory performance. There were no significant associations between hippocampal size and memory performance in individuals who only use tobacco or only use marijuana.

      They mention abstainers below. It appears that they are saying that there is memory improvement compared to complete non-smokers. Will need to check actual study. Note that my interest in nicotine is confounded by the use of tobacco.

      Edit: eyeballing the graphs, it appears that the tobacco group did the best, while the marijuana plus tobacco group did the worst. Given the small sample size and high variability, these are not statistically significant. Nonetheless, that suggests that marijuana never benefits memory. Edit: eyeballing the graphs, it appears the tobacco group did the best, while the marijuana plus tobacco group performed worst. Given the small sample size and high variability, these results are not statistically significant. Nonetheless, it suggests that marijuana is never a benefit to memory.

  2. Mar 2018
    1. Nicotine is composed of a pyridine ring and a pyrrolidine ring, synthesized from two separate branches as demonstrated in Figure S1

      This is interesting!

  3. May 2017
  4. Sep 2015
    1. It saved Virginia from ruin, incentivized further colonization, and laid the groundwork for what would become the United States.

      Tobacco may be the reason the United States exists. or at least a big reason.

  5. Aug 2015
    1. Crown.

      Study Questions:

      How did Powhatan initially receive the colonists? Why?

      How does tobacco change the colony?

      How does the notion of race begin to change in the colony?

    2. Crown.

      Study Questions:

      How did Powhatan initially receive the colonists? Why?

      How does tobacco change the colony?

      How does the notion of race begin to change in the colony?

    3. IV. English Colonization

      Before reading this text watch and annotate the following video lecture for this week. Make sure you can answer the study questions that will appear within the video:

      The Growth of British North America video lecture: