Home > miscellaneous > Signals, Sensations, Perceptions, Commands, Actions!

Signals, Sensations, Perceptions, Commands, Actions!


In humans, the sensors are the eyes, ears, nose, skin, and taste buds. The processor/memory/controller combo is the brain. The actuators are the muscles. Although not shown on the diagram, “commands” are also issued to the sensors. All inter-part communications “In Here” are manifested via neural currents.

Of course, this crap is all made up. It’s simply a cacophonous dump of what was in my tortured mind at the moment.

  1. Rainee
    May 2, 2014 at 4:01 am

    Don’t knock it Tony! I thought it was excellent :-). I love it when a picture says a thousand words.

  2. Dave
    May 6, 2014 at 10:52 am

    There are other, tighter control loops in there too. For example, the loop you show (presuming it is the one with conscious control) is duplicated at lower levels with shorter nerve runs in more primitive parts of the nervous system such that reactions can be faster; example, pulling your hand out of a fire, or jumping back when a tiger attacks. Especially for these there is a ‘single’ command that stimulates a portion of the brain or nervous system directly, carrying out co-ordinated action without any higher-level mechanism saying ‘ok, you did that, now do this’.

    This is also how muscle-memory works, where you can ‘bundle’ learned responses to be triggered from a single stimulus.

    • May 7, 2014 at 3:34 am

      Yes, we are each a stack of hierarchically structured control systems. The lower levels are fast-acting, autonomous. The higher levels are slow-acting and driven by conscious decision making. Bill Powers has the best model of how we, and any other, living thing ticks: http://wp.me/psQTe-6do

  1. No trackbacks yet.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: