Neurone function compared to gene expression

The following diagram shows a simple abstract model of an analogue computing device. A variety of inputs (I) feed into an integrator (C). Some inputs are positive (+), some are negative (-). Some act indirectly, blocking

Brain structure

Brain function

Fig. 18-2: "brain state" is roughly analogous to the "internal state" of a cell as defined in chapter 6.

or augmenting other inputs. The integrator (C) sums the inputs from moment to moment and instructs an effector (E) to vary the output (O) accordingly. The output varies from zero to a maximum value that depends on the detailed construction and the function of the device.

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