In my opinion that applies in the materialist sense.
The overall pattern of electrical impulses and the patterns and timings of chemical ejections in the brain are in dialectical relationships with the actual cells, tissues and glands.
But on different time scales of course. You can clearly remember your own thoughts if you tell it yourself in a way that you can remember. So the collective electrical impulses act on the matter as it gets transferred from the short term memory which are (most likely) the collective electric activity of neurons and into long term memory which is most likely based on chemicals.
Also the feelings that you feel, like stress can also have its impact on the brain, often negative.
So it goes without saying that what is inside skull, as both the cells, neurons and their patterns are in unity with patterns of electrical impulses and releases of chemicals(hormones, neurotransmitters, neuromodulators(GABA, glutamate), and others).
They both influence each other.
tl;dr: When thinking dialectically, do not forget about the time in which everything happens.
Also materialistic dialectic is a guideline for the scientific inquiry itself, because it is the most general philosophical principle. If your conclusions are at odds with the dialectical principles, odds are that you made a mistake.
The ideology(feels) is information. In your mind it is the pattern of collective electric impulses.
In the society, the ideology is collective pattern of the words that people exchange with each other and are exposed to through media. And probably the images as well.
Information is bound to the material. More specifically to the matter or energy. Voice to sound waves, images to the inks, papers, dyes, fluorescent screens, luminiscent devices, even coherent laser waves that are bent on the delicate structures of a hologram, forming a holograph.
But to illustrate how must the information be defined, using the (computer) bits is good enough.
A letter from a prisoner of war to his wife, which went through censorship contains one bit of information.
Which is that the POW is alive. Despite the letter containing a page of written words. Which carry their information as well. Carl Sagan in his series also talks about information and bits, you can find the clip on youtube.
The book is a good introduction to cybernetics. It might be lengthy at times, but presents the basic points and principles of cybernetics. You can only read the chapter on information.
