Margaret S. Livingston, Ph.D. Talk at UCI

Key Words/Phrases/Notes/Quotes from the lecture:

  • The Visual System
  • Shares works of art that are important because they help us understand how we see; low-level vision.
    • Line Drawings
  • First and most fundamental stage in visual processing
    • Center Surround Antagonism
  • “Vision is information processing, not image transmission.”
  • “All your visual system cares about is contrast.”
  • Your visual system has to compute distance and depth (3d) using a number of cues:
    • Relative motion
    • Shading
    • Perspective
    • Occlusion
    • Stereopsis
  • “Colors are only symbols. Reality is to be found in luminance alone.” – Pablo Picasso
  • Color and Luminance do different things
  • “I do not paint things; I paint only the difference between things.” Henry Matisse (vision is information processing)
  • 45:00
    • “You move your eyes 2-3x a second. So your retinal images are constantly changing. How do you knit this together into a constant perception?”
      • Fading + cut in motion (film editing)
  • ***50:44 is on Stereopsis (but it’s helpful to have 3d glasses to watch)
    • “If you [have stereopsis and] you go to a museum and want to fall into a painting, close one eye.”
    • “Stereo-matching is a difficult problem.
      • Cyan to right, white to left, vice versa
      •  Steps in an escalator – have slats that you can misread by mistake at different distances (I think this is a good example of a moment when someone experiences stereoblindness)
      • Klimt had no Stereopsis!!
      • “You cannot have stereopsis if your eyes are misaligned because the computations for depth begin in early visual cortex where they are mapped retinotopically, that is across the visual field, and if your two eyes are pointing in two different directions the information from two eyes from the visual field don’t even end up in the visual cortex so you don’t have any depth perception.”
  • Dyslexic Brain Explored
  • Stereoblindness in famous artists
  • “Stereoblindness may not be only a disability but an asset for an artist”

 

More on “Stereo Sue” from Oliver Sacks’ book

Professor Sue Barry, dubbed “Stereo Sue” by neurologist Oliver Sacks in his book The Mind’s Eye, actually wrote her own book on her experience with Stereoblindness called Fixing my Gaze. I ordered it from my local library and will share quotes/notes when available. http://www.stereosue.com/


Short Interview with Oliver Sacks and Sue Barry.

In this video, Prof. Barry shares another example of her experience with Stereoblindness.

 


Neurologist & Professor, Sue Barry, gives an excellent Tedx Talk on Steroblindness

This presentation gives an incredible account on Sue Barry’s personal experience with Steroblindness. She explains the condition, the cure, and debunks research in detail.

Key Words/Phrases/Quotes from Tedx Talk:

  • Double-vision
  • Combined Input vs. Singular 
  • Eye turn
  • The Critical Period Theory- time in childhood for visual development
  • Developmental Optometrist & Vision Therapy
  • “In distance, everything seemed to jitter”
  • “Didn’t know to aim the eyes at the same place in the same space and time.”
  • Normal viewer (develop between 2 to 4 months of age)
    • Convergence action = while looking at a close object, aim eyes by turning eyes both in together 
    • Divergent action= turn both eyes out to aim that the more distant object
  • Prof. Barry learned to do the above at the age of 48
  • More on the Broch String: https://www.seevividly.com/info/Lazy_Eye_Treatments/Eye_Exercises/Brock_String
  • “An adult brain changes as a result of active learning. You have to become very self-aware. You have to learn how to change very entrenched habits into new ones. And these experiences have to be accompanied by a sense of novelty and a sense of accomplishment in order for you to continue with all the hard world and practice it is going to take. So if you read in a text book that something is not possible, it ain’t necessarily so.”

 


 

Sleep/Dream Research Continues… More Ideas & Quotes from”Big Dreams”, a book by Kelley Bulkeley

My research for my project on sleep continues and my focus for my work has a clear direction. I proposed earlier this week to create a dream journal in the form of a scroll-based on two Japanese works posted below. I have decided to work with mixed media to tell the tale of my own dreams through illustration, collage, and hand-written poems and verse. I would like to weave each dream tale together so you are where one ends and the other begins is blurred. Similar to the style of Ovid’s Metamorphoses, a poetry narrative on Roman Mythology that is basically one long poem filled with interwoven stories that are 416 pages long. For now, I will start with four of my dream tales but I have a really long scroll so I want to add stories and tales to this work for as long as I can well after this class is over.

When I revisited the book “Big Dreams” again, I wanted to focus on one of the main aspects of the book, where dreams may be the base for religion, collective sleep, and other ideas surrounding culture and dreams. Here are some quotes that I think are worth sharing:

“Classicist E. R. Dodds said, ‘[T]‌he Greeks never spoke as we do of having a dream, but always of seeing a dream.’5 ” (5 Recall)

 

“In a previous book, Dreaming in the World’s Religions: A Comparative History, I discussed the various roles of dreaming in Hinduism, Chinese religions, Buddhism, religions of the Fertile Crescent (Egypt, Mesopotamia, etc.), ancient Greek and Roman religions, Christianity, Islam, and the indigenous religions of Africa, Oceania, and the Americas. (p.83) The conclusion of that book serves as a prologue to this one: ‘Dreams and dreaming have been a widely recognized and highly valued part of human life—particularly in relation to people’s religious beliefs and practices—in virtually every cultural community known to have populated the planet.’13 ” (5 Recall)

 

“During the normal course of human sleep the immune system becomes highly active, performing a variety of essential tasks for bodily health. Religiously inspired dream rituals can have the medically useful function of enhancing those endogenous healing processes. What Western researchers call the “placebo effect” can be activated in certain kinds of dreams, particularly in big dreams with highly memorable images, characters, and emotions. These dreams can boost the physiological impact of the placebo effect and mobilize the body’s own illness-fighting defenses.” (15 Ritual Healing)

 

“The historical background to this aspect of human religiosity has deep roots in the ancient teachings of many traditions. One of the best illustrations of dream-based religious healing practices comes from the same cultural world as Perpetua’s, just a few years before her birth, in much more favorable conditions. The Roman orator Aelius Aristides was born in (p.244) 117 C.E (…)  One of the primary tools used by the priests at all Asclepian temples was dream incubation. We know a great deal about this practice at Pergamon from Aristides’s dream diary, which he titled The Sacred Tales.3 (p.245)” (15 Ritual Healing)

 

“A medieval Jewish text described a “dream question” ritual (she-elat chalom) that has many of the same features as the Asclepian and Muslim (p.247) incubation practices.7 Like them, it starts with changes in diet, purifications, immersions in water, and extensive prayers and scriptural recitations.” (15 Ritual Healing)”

 

“Heraclitus was right about many things. But on the solipsism of sleep, the philosopher had it wrong. In sleep each person goes into a world that remains profoundly social, with ongoing connections to interpersonal relationships, collective realities, and cultural systems of meaning and value. Sleep involves a lowering of sensory awareness, but not a total withdrawal, and sleep almost always occurs within the familiar context of a broader community. A social dimension of sleep has deep roots in the evolution of our species. From the earliest times through the modern era, humans have naturally preferred sleeping together.” (4 Culture)