From LOJBAN%CUVMB.BITNET@UBVM.CC.BUFFALO.EDU Wed Nov 29 13:40:15 1995 Received: from VMS.DC.LSOFT.COM (vms.dc.lsoft.com [205.186.43.2]) by locke.ccil.org (8.6.9/8.6.10) with ESMTP id NAA08573 for ; Wed, 29 Nov 1995 13:40:13 -0500 Message-Id: <199511291840.NAA08573@locke.ccil.org> Received: from PEACH.EASE.LSOFT.COM (205.186.43.4) by VMS.DC.LSOFT.COM (LSMTP for OpenVMS v1.0a) with SMTP id 5F8C6B16 ; Wed, 29 Nov 1995 13:30:55 -0500 Date: Wed, 29 Nov 1995 12:28:46 -0600 Reply-To: "Steven M. Belknap" Sender: Lojban list From: "Steven M. Belknap" To: John Cowan Status: OR lojbab cusku di'e >in a JL issue a few years back). In which they basically proved that colors >are discerned psychologicall by comparison with an architype, and NOT by being >compared for "moreness". They are LESS DIFFERENT from the archetype than >some culturally/language-depndent boundary with adjacent colors in the semantic >field. > >This was confirmed by bilogical evidence that the pure colors are recognized >by being closest to the triggering frequencies of the detecting cones and rods >in our eyes. This implies that color *could* (not *must*, *could*!!) be defined by an external, objective standard, which would be potentially quantifiable on an interval or ratio scale in intensity and purity. Some people, of course, are missing certain types of cones. Also, in some animal species, there is variation among individuals as to the protein sequence of some of the photosensitive proteins in the cones, so that perception of say would be different for different individuals. I don't know if this is true for humans. co'o mi'e. la stivn. Steven M. Belknap, M.D. Assistant Professor of Clinical Pharmacology and Medicine University of Illinois College of Medicine at Peoria email: sbelknap@uic.edu Voice: 309/671-3403 Fax: 309/671-8413