> The effect of these serotonin “peaks” on locomotion was almost instantaneous (speed reduction manifested one second after stimulation) and transient, with thi

> The effect of these serotonin “peaks” on locomotion was almost instantaneous (speed reduction manifested one second after stimulation) and transient, with things going back to normal after five seconds. But during this short period of time, “the animals acted as if they weren’t motivated”, says Zach Mainen, who led the study. I'm really, really, not sure how they can draw the link to general motivation. Ok, so the animals seemed not motivated after serotonin spiked? Couldn't that possibly just be due to the transient effect alone? Like, once stabilized at higher levels, maybe they would have normal, or even higher motivation. It was that you "shocked" them with it..