[Author's summmary, 2020]. Motivation specifically to drink (ingest watery materials) is widely assumed (still) to be innate, i.e. independent of exposure to fluids in contexts and sensory, somatic and/or social effects of their consumption. This comment floats the idea that human infants learn to differentiate textures of low-energy fluids from semi-solid and solid foods after they begin to be weaned from milk as sole drink and food.

The discipline of affective neuroscience is concerned with the underlying neural substrates of emotion and mood. This review presents an historical overview of the pioneering work in affective neuroscience of James and Lange, Cannon and Bard, and Hess, Papez, and MacLean before summarizing the current state of research on the brain regions identified by these seminal researchers. We also discuss the more recent strides made in the field of affective neuroscience. A final section considers different hypothetical organizations of affective neuroanatomy (...) and highlights future directions for the discipline. (shrink)