Daniel Barnett’s book Movement as Meaning In Experimental Film discusses this issue at length.
https://books.google.com/books/about/Movement_as_Meaning.html?id=BaiUAf1dBMcC&printsec=frontcover&source=kp_read_button Tara Nelson > On Mar 31, 2019, at 9:19 AM, FrameWorks Admin <framewo...@re-voir.com> wrote: > > The flickering shutter creates an effect known as the phi phenomenon (and not > persistence of vision as is often mistakenly evoked - persistence of vision > explains the thaumatrope or spinning disc with bird and cage that superimpose > in the eye, and this would only create 24 images per second superimposing in > the eye). The phi phenomenon explains how we perceive a marquee of flickering > lights as continuous motion. The brain creates the illusion of movement > during the flicker, analogous to the dreams we create in the night that > separates the days and waking consciousness. > > The illusion at work when watching flickerless video is the beta movement > effect. It is a very different perception and requires much less activity on > our part as the brain has nothing to fill in. > > Here are links to illustrations of the two effects: > > Phi phenomenon > https://en.wikipedia.org/wiki/Phi_phenomenon#/media/File:Lilac-Chaser.gif > > Beta movement effect > https://en.wikipedia.org/wiki/Beta_movement#/media/File:Beta_movement.gif > > - Pip Chodorov > > >> On Mar 31, 2019, at 7:24 AM, Nicole Baker <neba...@pnca.edu> wrote: >> >> When I was in film school a professor told me that watching film engages the >> mind in a very active way, that the darkness and persistence of vision >> required to assemble the frames into a continuous, moving image was like >> doing mental calisthenics. On the other hand, watching video produces very >> little brain activity, the mechanics do not engage our minds the same way, >> and our watching becomes very passive and inactive. >> I do not have any science to back this up, it was just what I was told. >> There's a certain amount of sense to it, but I'd love to see hard evidence >> or studies on the subject! >> >> Nicole Elaine Baker >> MFA in Visual Studies, 2019 >> Pacific Northwest College of Art >> Hallie Ford School of Graduate Studies >> www.magiklantern.com >> >> >> >> >>> On Sat, Mar 30, 2019 at 11:17 AM Robert Withers <withe...@earthlink.net> >>> wrote: >>> Hello Albert, >>> I enjoyed a few minutes of the film you posted, even with my non-existent >>> Spanish. >>> >>> It raises a question I’ve puzzled over. We used to be bemused by the fact >>> that, since film projection is intermittent and interrupted by a shutter, >>> blocking light to the screen, we were perhaps sitting in darkness during >>> half of a screening, watching the persistent images in our minds. It’s hard >>> to research how video technology works comparatively, but I find some >>> suggestions that there is no similar dark interval in video projection (if >>> there is it’s fleeting — the blanking interval etc.) so I wonder how the >>> video technology affects our physiology. >>> >>> Can anyone share info or a source for info or thoughts on info about this? >>> >>> Thanks, >>> Robert >>> >>> Robert Withers >>> withe...@earthlink.net >>> 202 West 80 St #5W NYNY 10024 >>> >>> >>> From: Albert Alcoz <albertal...@gmail.com> >>> Subject: [Frameworks] "All the Dark Screens" >>> Date: March 30, 2019 at 4:15:03 AM EDT >>> To: Experimental Film Discussion List <frameworks@jonasmekasfilms.com> >>> >>> >>> Hello, >>> >>> I'm writing this email to share a video essay titled "All the Dark Screens" >>> created by the curator Alexandra Laudo and me under the project Soy Cámara >>> by the CCCB: >>> http://www.cccb.org/en/multimedia/videos/all-the-dark-screens/231229 >>> >>> It is a 25 minute video –with an Spanish voice over– where some esthetic >>> and ideological issues are exemplified through experimental films and >>> artist's videos: >>> >>> In a society dominated by the power of screens and images, audiovisual >>> darkness can be a strategy of resistance. We tend to associate screens with >>> light, but darkness has been consubstantial with audiovisual creation since >>> the dawn of the cinema. “All the Dark Screens" presents a fragmentary >>> genealogy of the use and presence of opacity and the absence of image in >>> cinematographic and video creation, and reflects on the poetic and >>> political power of these forms of audiovisual iconoclasm, and on their >>> relation with our ways of seeing and not seeing. >>> >>> The points of departure are the video/action by Scott Stark switching off >>> public TV monitors ("A Better World (for Rick P)" ) and the idea questioned >>> here by Yoel Miranda on October of 2007 ("how much of what we see is >>> black?"). >>> >>> Since it is an informative and pedagogical video, with dozens of short >>> clips by independent filmmakers credited at the end, would be great if you >>> to share it through social networks. >>> >>> All the best, >>> Albert Alcoz >>> -- >>> http://visionaryfilm.net/ >>> http://albertalcoz.com/ >>> >>> _______________________________________________ >>> FrameWorks mailing list >>> FrameWorks@jonasmekasfilms.com >>> https://mailman-mail5.webfaction.com/listinfo/frameworks >> _______________________________________________ >> FrameWorks mailing list >> FrameWorks@jonasmekasfilms.com >> https://mailman-mail5.webfaction.com/listinfo/frameworks > > _______________________________________________ > FrameWorks mailing list > FrameWorks@jonasmekasfilms.com > https://mailman-mail5.webfaction.com/listinfo/frameworks
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