I was off by a decade. Here are some references to Stroud
STROUD, J.M. (1948). The moment function hypothesis. MA. Thesis, Stanford Univer. STROUD, J.M. (1950). Psychological moment in perception - discussion. In H. von Foerster (Ed.), Cybernetics - circular, causal and feedback mechanisms in biological and social systems. Transactions of the sixth conference. New York: Josiah Macy, Jr. Foundation. STROUD, J.M. (1955). The fine structure of psychological time. In H. Quastler (Ed.), Information theory in psychology. Glencoe, Ill.: Free Press. -- Doug Wallen, Psychology Dept. (507) 389-5818 Minnesota State University, Mankato [EMAIL PROTECTED] 23 Armstrong Hall Mankato, MN 56001 > From: Doug Wallen <[EMAIL PROTECTED]> > Reply-To: "Teaching in the Psychological Sciences" <[EMAIL PROTECTED]> > Date: Fri, 09 Apr 2004 10:29:09 -0500 > To: "Teaching in the Psychological Sciences" <[EMAIL PROTECTED]> > Subject: Re: Wagon-wheel illusion again > > I haven't yet read the Purves paper, but if memory serves, the idea of > distinct perceptual segments was proposed back in the 1960's by John Stroud. > (Whose business cards read "General Consulting Scientist") He referred to it > as the psychological moment and believed it divided our experience into > intervals of approximately 100 msec. It has been a long time since I have > heard it referred to so my recall may be a bit hazy. > -- > Doug Wallen, Psychology Dept. (507) 389-5818 > Minnesota State University, Mankato [EMAIL PROTECTED] > 23 Armstrong Hall > Mankato, MN 56001 > >> From: "Stephen Black" <[EMAIL PROTECTED]> >> Organization: Bishop's University >> Reply-To: "Teaching in the Psychological Sciences" <[EMAIL PROTECTED]> >> Date: Fri, 09 Apr 2004 10:25:24 -0500 >> To: "Teaching in the Psychological Sciences" <[EMAIL PROTECTED]> >> Subject: Wagon-wheel illusion again >> >> Our story so far. Purves et al (1996) reported that the wagon-wheel >> illusion occurs in continuous illumination. They argued that this >> implies that we perceive visually in sequential episodes, a radical >> new idea with important implications for perception. >> >> I then stumbled across (while catching up on my _Current Contents_ >> scanning) a new article by Pakarian & Yasamy (2003) which said that >> the illusion did not occur in continuous light. >> >> I wrote to Dr. Pakarian for a reprint, and asked him specifically >> about the Purves finding in relation to his own. Within a few short >> hours, I had a reprint and curteous reply all the way from sunny (and >> not so Sunni) Tehran. I need not have bothered querying him about >> Purves. The whole point of the paper was to report that they failed >> to replicate Purves' finding despite 15 subjects and an apparently >> sophisticated methodology. All subjects, as expected, did report the >> effect under fluorescent light. P & Y were in touch with Dr. Purves, >> presumably to ensure that their technique was adequate, as they >> thanked him in their acknowledgement. >> >> P & Y didn't speculate concerning the source of their failure to >> replicate. They did say "It appears to us that the results reported >> by Purves et al, which have recently been used as some evidence for >> discreteness of our conscious perception in some articles (Crick and >> Koch, 2003 [yes, _that_ Crick]; VanRullen and Koch, 2003), are not >> replicable." >> >> So we have a major mystery here. Beth, Tom's students, and Dale >> Purves may well say "Oh, to have seen what I have seen". But what >> about the rest of us? Let a thousand wheels spin! Let two thousand >> eyeballs examine them! And Dr. Pakarian in his e-mail to me, >> although still at the Institute for Studies in Theoretical Physics >> and Mathematics, this time gave his affiliation as the School of >> Cognitive Sciences. So that crack about time off from atomic bomb- >> making was indeed ill-advised. >> >> Stephen >> ___________________________________________________ >> Stephen L. Black, Ph.D. tel: (819) 822-9600 ext 2470 >> Department of Psychology fax: (819) 822-9661 >> Bishop's University e-mail: [EMAIL PROTECTED] >> Lennoxville, QC J1M 1Z7 >> Canada >> >> Dept web page at http://www.ubishops.ca/ccc/div/soc/psy >> TIPS discussion list for psychology teachers at >> http://faculty.frostburg.edu/psyc/southerly/tips/index.htm >> _______________________________________________ >> >> >> --- >> You are currently subscribed to tips as: [EMAIL PROTECTED] >> To unsubscribe send a blank email to [EMAIL PROTECTED] > > > --- > You are currently subscribed to tips as: [EMAIL PROTECTED] > To unsubscribe send a blank email to [EMAIL PROTECTED] --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED]
