1.3 Computational Neuroscience: Mechanistic and Interpretive Models

In the previous lecture Hubel and Wiesel entertained us with their Star Wars Jedi Knight lightsaber-like experiment and introduced us to the concept of receptive fields. We learned about a descriptor model of receptive fields, and in particular, we looked at two different kinds of receptor fields, center-surround receptor fields and oriented receptive fields. So here are some examples of these oriented receptive fields. And, the question that we asked was, how are these oriented receptive fields constructed from the center-surround type receptive fields? In other words, what we wanted was a mechanistic model of how receptive fields are constructed using the neural circuitry of the visual cortex. So, in order to answer this question, we need to look at the neuroanatomy of the visual system.

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