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- Message-ID: <9211191132.AA12770@pelvoux.imag.fr>
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- Date: Thu, 19 Nov 1992 12:32:00 MET
- Sender: "Control Systems Group Network (CSGnet)" <CSG-L@UIUCVMD.BITNET>
- From: Maler <maler@IMAG.FR>
- Subject: Re: Complexes of perceptions
- In-Reply-To: "William T. Powers" <POWERS_W%FLC@VAXF.COLORADO.EDU> "Complexes
- of perceptions" (Nov 18, 7:06)
- Lines: 30
-
- [From Oded Maler 921119]
-
- [From Bill Powers (921117.2000)]
-
- You seem to claim that a signal which is a combination of two
- or more other signals "really" (explicitly) exists when there
- is a "gate" that takes the two wires and outputs on a third wire
- a signal whose observed value is the combination of the two.
-
- Now consider a different situation where those two signals are
- not combined to create a new perceptual function which is servoed,
- but rather are both servoed independently but their effects
- are combined via the output function (e.g., two nerve fibers that
- feed into neighboring parts of the same muscle).
-
- In such situation a, there exist virtually a combined signal which
- can behave as-if it is the controlled signal, but it does not really
- exist inside the system. Put it another way, the "real" signals
- can be probed directly (in principle) by an external observer, but
- in order to observe the "virtual" signals, the measurement instruments
- of the observer should also include the missing circuits for creating
- the combinations.
-
- --Oded
-
- --
- ===============================================================
- Oded Maler, LGI-IMAG (Campus), B.P. 53x, 38041 Grenoble, France
- Phone: 76635846 Fax: 76446675 e-mail: maler@vercors.imag.fr
- ===============================================================
-