The universe doesn't care about your conception of time.
Your conception of time care about the local time coordinate of the universe.
Your brain has a few clocks:
* Some are not very clear, like the time that the Sodium and Potassium needs to separate after a neuron has fired. It can't fire again until it has been recharged, so it is a clock that regulates the fire rate https://en.wikipedia.org/wiki/Na%2B/K%2B-ATPase
* Other clocks are more clear, for example there is a daily clock that counts approximately 24 hours. It has two substances that accumulate slowly and make the other substances get accumulated or get destroyed. It's tricky, but it's stable enough. https://en.wikipedia.org/wiki/Circadian_rhythm
These clock and all the other clocks and reactions of the brain are affected by the changes in the time coordinate, it's the same effect of a mechanical clock or an electronic clock or a water clock, or ...
If you go to a very fast space ship where there is a big time dilation, you will think more slowly, but the wall clock in the spaceship will be also more slowly, and the plants will grow more slowly, and the muons will decay more slowly, and the sound will move more slowly ...
Everything will happen more slowly, so inside the spaceship you will not notice the change. Everything will be normal. You will not experience "bullet-time" (like in the Matrix Movie) or "anti-bullet-time".
Your conception of time care about the local time coordinate of the universe.
Your brain has a few clocks:
* Some are not very clear, like the time that the Sodium and Potassium needs to separate after a neuron has fired. It can't fire again until it has been recharged, so it is a clock that regulates the fire rate https://en.wikipedia.org/wiki/Na%2B/K%2B-ATPase
* Other clocks are more clear, for example there is a daily clock that counts approximately 24 hours. It has two substances that accumulate slowly and make the other substances get accumulated or get destroyed. It's tricky, but it's stable enough. https://en.wikipedia.org/wiki/Circadian_rhythm
These clock and all the other clocks and reactions of the brain are affected by the changes in the time coordinate, it's the same effect of a mechanical clock or an electronic clock or a water clock, or ...
If you go to a very fast space ship where there is a big time dilation, you will think more slowly, but the wall clock in the spaceship will be also more slowly, and the plants will grow more slowly, and the muons will decay more slowly, and the sound will move more slowly ...
Everything will happen more slowly, so inside the spaceship you will not notice the change. Everything will be normal. You will not experience "bullet-time" (like in the Matrix Movie) or "anti-bullet-time".