Hi! I'm a Human Physiology TA at the University of Utah. I started out making educational animations to help my students. Feel free to comment with questions, and I'll help out however I can!
So it's basically Electrical Engineering Control System. It's amazing to see that engineering starts from the human body itself or otherwise a Human body is a perfectly engineered system
So how does this get affected by pyrethrins? Like why would the channels be kept open? I was reading about shock dope lol I’m just curious as to what is happening in the brain that ordinary flowers can’t derive the same compound from, like how chrysanthemums can make pyrethrum for pesticides after undergoing a process
To better understand this subject you need to go back to the research conducted by Hubel and Wiesel during the second half of the 20th Century. That was the foundation that lead to an understanding for the visual system. Their initial paper was published back around 1960 when I was in Jr. High School. I became interested in the subject in the mid to late 1960s and built an "artificial retina" using an IBM 1620 Computer a couple of years later.
I’d like to see more. Love seeing how they worked. Trying to visualise how densely packed they are with each other and if there is differing density’s on the axon, maybe more near the end?
Why does the number of sodium ions increase within the cell when the neuron is receiving an excitatory signal? Isn’t that a result of the gated channels opening?
Do horizontal cells contribute the opposing signal of both the center cones and surround cones, or only of the surround cones? Additionally, when we are considering an off-center bipolar cell with an off-center and on-surround, we maximize the depolarization of the cell. However, since the horizontal cells contribute the opposing signal to that of the surround, is it reasonable to say that the off-bipolars are maximally excited because of both the higher rate of Glutamate from the off-cones to the off-center bipolars AND from the opposite signal of the more inhibitory surround cones (contributed to by the horizontal cells of the surround)? Your video states that there is lowered inhibition by the horizontal cells in this case, but can that be thought of as increasing the excitability of the center cones?
Thank you for explaining this concept for my biology course. I am an environmental science student. Sometimes these courses are not fully explained to us because we are not med students. But we do need to understand the content just as well!
