On the blackboard, Song He wrote fluidly. The classroom was packed, and the students kept lowering and raising their heads as they copied down notes.
"In the mammalian brain, there are two main types of cells responsible for navigation. Head-direction cells identify which way an animal is facing, while grid cells construct a map in the brain to aid positioning."
"That's only a general term. In reality, each type of cell includes many subtypes."
"Academia once believed that head-direction cells consisted only of broad-wave, low-frequency, conventionally firing excitatory neurons. But our scientists discovered another type: narrow-wave, high-frequency, fast-firing inhibitory neurons. These inhibitory neurons displayed even stronger burst firing and directional selectivity, while remaining stable in the dark..."
"This week, everyone will go to the laboratory and try a mouse-maze experiment. It will count toward your usual grade. The specific requirements are..."
Song He lectured with ease. Undergraduate-level knowledge was simply too easy for him—easier than drinking water.
His brain was working in separate divisions. A small portion controlled his mouth as he lectured, while most of his brain had become active, working on the Small Lin-Gar Conjecture!
The proof of the Small Lin-Gar Conjecture had reached a point near the summit. At the very least, he could already see the mountaintop. Only the final sprint remained!
But climbing day and night had drained too much of his energy. His inspiration was nearly exhausted, and he could not find the final route to the summit. Before him were only several-meter-high slabs of smooth rock, with nowhere to place his feet.
The students in the classroom failed to notice that their teacher was multitasking. In fact, Song He wrote on the board and lectured so quickly that he was almost at the limit of everyone's note-taking speed. The students had no time