Now the way in which I have designed this brain model to have free will is fairly simple, and it revolves around the randomization processor. This
processor should be able to produce truly random data, meaning the type of randomness you'd get from a quantum RNG. To get a proper understanding of
why I think this is crucial to the design you might want to take a look at my thread titled
Determinism and Consciousness
. This is basically the foundation which will allow the
brain to have original and creative thoughts which cannot be predicted.
You might be wondering why the sensory input from E1 is passed to the subconscious layer and not the conscious layer, this is because our subconscious
mind has the ability to filter out things which would harm the conscious psyche. For example you could witness something horrific, but you might not
actually see it even though it's happening right in front of you, because your subconscious mind has blocked it out so that you don't have to
experience it. So this is why the sensory data must first pass through the subconscious layer.
The diamond shaped unit on the left side is the sensory input encoder, which encodes the sensory data inflow and passes it to the subconscious layer.
You might also wonder why the conscious layer feeds back into the E1 unit, this is because the conscious mind has the ability to filter out certain
senses and focus on specific senses. For example when you get hurt you can focus on other things to take your mind off the pain, and if you focus
intently on one specific sense, like your sense of hearing, that sense will become sharper whilst the other senses become dampened.
The diamond shape unit on the right side of the diagram is the impulse encoder, which takes impulses sent from the subconscious layer and the
conscious layer and outputs an encoded signal which creates the action/motor responses. This is how the brain is able to turn thoughts into actions
and how it can interact with the external world, which is very important for consciousness imo. The subconscious layer also has direct contact with
this unit because the subconscious mind controls all sorts of unconscious impulses, like the beat of our heart.
Our heart keeps beating without us having to think about it, it's an unconsciously controlled motor impulse which the conscious mind has no control
over. But there are many motor impulses that the conscious mind does have control over, like the movement of your arms and legs and the movement of
you lips when you speak. And then there are other more weird impulses which are controlled by both layers. Like breathing for example, which can
alternate between conscious and subconscious control. If you stop thinking about breathing, you will still continue to breath.
Now the bottom part of the diagram, the large square area containing the smaller squares, is the memory module area as you may have already guessed.
These components hold data, they don't process data. The oval shapes can be though of as processors, and the square shapes can be thought of as data
storage units which can be read and written to by the processor units, and the diamond shapes are just encoding units. Note however, that the only
unit with direct access to the memory modules is the subconscious layer of the brain.
This is because the conscious mind does not have direct access to memories and other stored data. Your conscious mind doesn't know where all your
memories are stored, and you can't delete specific memories just by thinking about it. When you want to recall a certain memory, the conscious layer
will tell the subconscious layer that it wants a memory related to some set of data, and the subconscious layer will do a bunch of computations to
pull up the necessary memories based on the information provided to it by the conscious layer.
This is why the conscious layer has a direct connection to the subconscious layer, so that is can request information from the memory modules, which
the subconscious mind with locate and then return to the conscious layer. The subconscious layer might also choose to filter out certain memories
requested by the conscious layer if those memories are deemed to be too disturbing or devastating to the psyche of the conscious mind. This is how
memories can be suppressed and hidden even though the conscious mind didn't attempt to delete those memories from storage.
Now when the subconscious mind wants to access the memory modules, it can do so only through the first 3 modules (the language, temporal, and spacial
modules). If you want to remember where something is located you will need to access the spacial memory module, but you might also need to access the
temporal memory module to remember where something was located at a specific point in time, that is why the temporal module is strongly linked to the
spacial module. And the spacial and temporal modules are linked to the conceptual module because all memories are stored as a series of concepts.
The way the memory models are connected together is important, for example the language memory module has 3 connections: one to the temporal memory
module, one to the goal memory module, and one to the conceptual memory module. So each word in the language memory module can have a connection to
events which took place at some time in the life of the brain, they can have a connection to certain goals in the goal memory module, and they can
have connections to the conceptual memory module to help form a conceptual understanding of the word.
If you want to recall the meaning of a word you need to go through the language module, and then follow links through to the conceptual module. The
language module by its self even holds a degree of conceptual structures because each word in the language memory module will have links to other
similar words. The more similarities the words have in common, the stronger the link between them is. The conceptual module is very much the same, but
all it contains are associations and links between the data in the other modules.
The conceptual memory module helps connect everything together so that the brain can form concepts based on things it has experienced and knowledge
that it has gained during its life. And like the human brain, these associations and links should become stronger or weaker depending on how much they
are used. In this way the brain can evolve its concepts and create stronger links between things which are more related, and it can forget about
incorrect concepts or concepts that it no longer really cares about or finds irrelevant.
The point of having these types of associations is so that the brain can build its own understanding of the world. Most AI systems which are designed
to have conversations with humans are not giving you answers which they have produced according to concepts that they understand, they are giving you
scripted responses which correspond to pre-determined phrases. If you say something it wasn't programmed to understand than it will give you an answer
which is completely wrong and unintelligible and it breaks the flow of the conversation.
An AI system which truly understands the concepts behind the words you are saying would not do that, if it didn't understand something you said, it
would ask you to clarify what you mean or explain the thing it doesn't understand, and then the next time it was asked a about something similar it
could give an intelligent response. And due to the imaginative and unpredictable nature of the model, it wont give you the same response every time.
When I was a child I didn't give the same answers that I do now, because I didn't know all the things I know now.
The goal memory module is also very important because it holds the aspirations and instinctual goals of the brain so that it can make decisions based
on those goals. Some of the instinctual drives would include self preservation, race preservation, a desire for knowledge, a desire for social
interaction, and a desire for control over the external environment (more important that you might think). A
suggests "that intelligent
behavior stems from the impulse to seize control of future events in the environment".
The long and short term goals could be pretty much anything. Most people in this world have different goals, and those goals are based on our
experiences and accumulated knowledge, hence the connection the the temporal memory module. These goals are stored as conceptual ideas which can
typically be expressed in words, hence the link to the conceptual and language modules. When a short or long term goal has been completed it can be
stored in the temporal memory module as something which was achieved in the past, and replaced with another goal.
Well I think that just about covers 90% of my model and explains the reasoning behind it... if it doesn't I don't care because this thread is already
long enough as it is. If you have any more questions or don't understand something about my model just ask me about it. If you have any ideas of how
my model is wrong or how it can be improved I am all ears. Or if you have your own model that you want to share that would be great. I just hope this
thread doesn't die off with only a small amount of discussion because this is a fascinating topic.
edit on 11/12/2013 by ChaoticOrder because:
(no reason given)