In the following post I try to understand why retrieving an answer changes memory more than seeing it again, why Anki is revered in the pre-med and med student community, what its FSRS scheduler is estimating, whether reviewing cards on a treadmill helps, and what exam research actually proves active recall and spaced repetition solve […]
In the following post I try to understand what that range does at the receptor and signaling level, how coffee differs from isolated caffeine, what frontier caffeine research shows about the gut–brain axis and neuroprotection, and learn about withdrawal Caffeine isn’t a direct energy source or a conventional dopamine-releasing stimulant; at ordinary dietary exposure, it’s […]
A skeletal muscle is controlled through motor units. Each motor unit contains one lower motor neuron and the muscle fibers supplied by its axon. The CNS changes muscle force by recruiting more units and changing how frequently recruited units fire. A rough model is: $$ \text{descending + sensory input} \rightarrow \text{alpha motor-neuron spikes} \rightarrow \text{muscle-fiber […]