Imagine I had a bunch of little molecules or electrodes or chips or something of the sort, which were outfitted with the ability to attach to brain cells, receive specific electric signal/field patterns from the brain activity, and in turn either prompt a neuron to fire when it normally wouldn't or inhibit firing when it normally would. These little devices react to both specific electric patterns, and to the activity of their neighbors, to coordinate and form larger patterns with the brain cell they're attached to as one "node" of that pattern. This function allows them to react to specific signal patterns that correspond to a certain sensory input, and form a new "reaction" within the brain to that input by generating that altered pattern of electric activity among brain cells. Basically:
- Brain receives sensory input, sensory neurons signal that specific stimuli.
- System of neurons with attached devices receive the signals from the sensory neurons. Depending on the signal an individual one picks up, it either has no active effect, prompts its neuron to fire when it normally wouldn't, or inhibits firing in a neuron that otherwise would.
- This activity comes together into a new pattern of activity and brain pathways, creating a sort of "installed" electric-activity response to a stimulus, that normally is not present in the brain's behavior.
The devices themselves may work technologically, but if they are biological they may "determine" the response to a pattern by translating an electric pattern to chemical patterns internally, and then adding up the "sum" of chemical ratios and dynamically activating (to produce their electric/inhibiting effect) or remaining inactive in response to a particular sum.
Would this general system be able to work to alter brain behavior and "reactions" to particular input, or is there something I'm missing about neurons that would make this fundamentally impossible or too dangerous to do in this way?