Sensory maps and brain development the midbrain auditory nucleus had receptive fields independent of nature and intensity of the sound. Roger Sperry proposed a chemical gradient model for eye rotation and for neuronal wiring diagram. Retinal neurons and target cells had identification tags in the form of chemical gradients so that the projection of neurons would be orderly. For a topographic map of the visual world, the map first forms during neural development via molecular signals, such as chemospecific matching between molecular gradients. The molecular basis of sensory maps and brain development is a field that is being actively explored. The most recent work has
Pinky and the Brain mice are foiled by trying to speak "New York cabbie" and end up going in circles, the gag credit word was "anophelosis" defined as "morbid state due to extreme frustration". Another common element in nearly each episode is the following exchange (often referred to by the acronym "AYPWIP"): Brain: Pinky, are you pondering what I'm pondering?Pinky: I think so, Brain, but... Pinky's response ends with a non-sequitur such as, "we're already naked", "isn't a cucumber that small called a gherkin?" or "if they called them sad meals, kids wouldn't buy them." Brain would then become furious, often bashing Pinky over