#Mark Changizi

[despertarsabiendo]

¿Por qué los humanos tenemos los ojos al frente y no a los lados?

¿Alguna vez te has preguntado por qué los humanos tenemos los ojos al frente y no a los costados, como los conejos o los caballos? La ciencia lleva tiempo dándole vueltas a esta pregunta, y aunque no hay una única respuesta definitiva, sí existen teorías bastante interesantes que apuntan en una misma dirección: la evolución de los primeros primates. Según varios investigadores, la ubicación…

[dipnotski]

Mark Changizi – Doğayı Dizginlemek (2024)

Dil ve müziğin kökenlerine üzerine çok iyi bir inceleme. Mark Changizi, Changizi’nin, dil ve müziğin evrimsel dinamiklerini açıklayarak bizi kuyruksuz maymunlardan ayıran şeyin ne olduğunu gözler önüne seriyor. Bilimsel fikir birliği, insan konuşmasını anlama yeteneğimizin yüzbinlerce yılda geliştiği yönündedir. Daha yürümeden konuşmaları anlamayı öğreniyoruz ve çok büyük miktarda bilgiyi sadece…

[3lub]

Humans Effectively Have X-Ray Vision | Mark Changizi

[esoteric-codes]

Escher Circuits: Using Vision to Perform Computation

In 2008, Mark Changizi, a Sloan-Swartz Fellow in Theoretical Neuroscience at Caltech, noted that the eye can make sense of complex relationships that often mystify the brain.

Our everyday visual perceptions rely upon unfathomably complex computations carried out by tens of billions of neurons across over half our cortex. In spite of this, it does not “feel” like work to see. Our cognitive powers are, in stark contrast, “slow and painful,” and we have great trouble with embarrassingly simple logic tasks.

Might it be possible to harness our visual computational powers for other tasks, perhaps for tasks cognition finds difficult?

In other words, could we trick the eye into performing computation?

Changizi proposed the Escher Circuit, "a special kind of image that amounts to 'visual software' our 'visual hardware' computes" merely through perception.

Escher Circuits work by creating different states corresponding to how the eye resolves ambiguous images. Its core component, the wire, holds a state of 0 when we perceive it as if we are to the right of it; otherwise, it holds a state of 1.

Although we can "flip" the wire visually back and forth in our head, it is difficult to hold both views at once (you can flip it easily by glancing at the 0 and then the wire, and then the 1 and back to the wire again).

READ MORE...

[doanalyzethis-blog]

My Favourite TED Talks

My Favourite TED Talks

[et_pb_section admin_label=”section”][et_pb_row admin_label=”row”][et_pb_column type=”4_4″][et_pb_text admin_label=”Text” background_layout=”light” text_orientation=”left” use_border_color=”off” border_color=”#ffffff” border_style=”solid”] These are my Favourite TED Talks Favourite TED Talks. IF you haven’t watched a TED talk you must be living under a rock! But for those that may have not heard…

[epitome-the-burnkid-viii]

#alternative #media #broadcasting #lightworker #starseed #currentaffairs #youtube #esoteric #knowledge #space #cosmos #ascension #enlightenment #5dearth #crystalline #energy #spirituality #humanity #solarflare #solarflash #solarstorm #Rapture #lightwarrior #lightguardian #music #arts #philosophy #history #anthropology #Apocalypse #endtimes #NewAge #ageofaquarius #youtuberecommendedchronicles 🔮

[quotesfrommyreading]

With a greater understanding of how skin is rendered hairless, the big question remaining is why humans became almost entirely hairless apes. Millar says there are some obvious reasons—for instance, having hair on our palms and wrists would make knapping stone tools or operating machinery rather difficult, and so human ancestors who lost this hair may have had an advantage. The reason the rest of our body lost its fur, however, has been up for debate for decades.

One popular idea that has gone in and out of favor since it was proposed is called the aquatic ape theory. The hypothesis suggests that human ancestors lived on the savannahs of Africa, gathering and hunting prey. But during the dry season, they would move to oases and lakesides and wade into shallow waters to collect aquatic tubers, shellfish or other food sources. The hypothesis suggests that, since hair is not a very good insulator in water, our species lost our fur and developed a layer of fat. The hypothesis even suggests that we might have developed bipedalism due to its advantages when wading into shallow water. But this idea, which has been around for decades, hasn’t received much support from the fossil record and isn’t taken seriously by most researchers.

A more widely accepted theory is that, when human ancestors moved from the cool shady forests into the savannah, they developed a new method of thermoregulation. Losing all that fur made it possible for hominins to hunt during the day in the hot grasslands without overheating. An increase in sweat glands, many more than other primates, also kept early humans on the cool side. The development of fire and clothing meant that humans could keep cool during the day and cozy up at night.

But these are not the only possibilities, and perhaps the loss of hair is due to a combination of factors. Evolutionary scientist Mark Pagel at the University of Reading has also proposed that going fur-less reduced the impact of lice and other parasites. Humans kept some patches of hair, like the stuff on our heads which protects from the sun and the stuff on our pubic regions which retains secreted pheromones. But the more hairless we got, Pagel says, the more attractive it became, and a stretch of hairless hide turned into a potent advertisement of a healthy, parasite-free mate.

One of the most intriguing theories is that the loss of hair on the face and some of the hair around the genitals may have helped with emotional communication. Mark Changizi, an evolutionary neurobiologist and director of human cognition at the research company 2AI, studies vision and color theory, and he says the reason for our hairless bodies may be in our eyes. While many animals have two types of cones, or the receptors in the eye that detect color, humans have three. Other animals that have three cones or more, like birds and reptiles, can see in a wide range of wavelengths in the visible light spectrum. But our third cone is unusual—it gives us a little extra power to detect hues right in the middle of the spectrum, allowing humans to pick out a vast range of shades that seem unnecessary for hunting or tracking.

Changizi proposes that the third cone allows us to communicate nonverbally by observing color changes in the face. “Having those two cones detecting wavelengths side by side is what you want if you want to be sensitive to oxygenation of hemoglobin under the skin to understand health or emotional changes,” he says. For instance, a baby whose skin looks a little green or blue can indicate illness, a pink blush might indicate sexual attraction, and a face flushing with red could indicate anger, even in people with darker skin tones. But the only way to see all of these emotional states is if humans lose their fur, especially on their faces.

In a 2006 paper in Biology Letters, Changizi found that primates with bare faces and sometimes bare rumps also tended to have three cones like humans, while fuzzy-faced monkeys lived their lives with just two cones. According to the paper, hairless faces and color vision seem to run together.

Millar says that it’s unlikely that her work will help us directly figure out whether humans are swimming apes, sweaty monkeys or blushing primates. But combining the new study’s molecular evidence of how hair grows with physical traits observed in humans will get us closer to the truth—or at least closer to a fuller, shinier head of hair.

  —  Why Did Humans Lose Their Fur?

[pinerbike]

Black and white spiral

"For example, imagine walking through a tube, and there are stripes painted down the side. Instead, spirals in real life are more often due to something going in a circle while simultaneously changing in distance from you," Changizi wrote in an email. "So, when your brain decides that those rings are actually spirals, it's probably not deciding they're spirals lying within a flat surface in front of you. "Once your visual system guesses that they may actually be spirals at the larger scale, it actually creates a perception of it being that way," Changizi said.Ĭhangizi explained that when the brain tries to make sense of complex stimuli, it "places its money" on 3-D scenes it might actually be standing in front of, rather than 2-D images that it didn't evolve to understand. The spiral cues beat out the circle cues. The offset between the black squares in one ring with the black squares in neighboring rings also creates the perception of a spiral, as does the offset between the white squares in adjacent rings. Although the squares actually form rings, the tilt of the squares is consistent with a spiral, he explained. It's the tilted black-and-white squares that throw off your peripheral vision, according to Mark Changizi, an evolutionary anthropologist and director of human cognition at 2AI Labs in Boise, Idaho. "Notice that the illusion is strongest out in the periphery, and there is little illusion near the center of wherever you're staring in the image." "Peripheral vision does not accurately keep track of all the visual details, and so in some situations like in this illusion, the visual system makes errors," Raj told Life's Little Mysteries. When confronted with an optical illusion, or any other scene, "the visual system is interested in inferring what regions of an image are part of the same object or were made by the same process," explained Alvin Raj, a researcher in the Computer Science and Artificial Intelligence Lab at the Massachusetts Institute of Technology, who uses spiral illusions to study peripheral vision mechanisms.īut in this case, the visual system receives conflicting cues: Some say "circle," and some say "spiral." At the periphery of your vision, the spiral cues win.

[rosajm]

Review of Expressly Human by Mark Changizi and Tim Barber

Expressly Human is a nonfiction work by Mark Changizi and Tim Barber. The work deals with the science of expression through body language and non-worded sounds. This is a means of communication that relies on the ability to send a message to the other party through the use of emotions. The authors highlight a working scenario where drivers use expressions successfully to communicate with other…

[januaryisbrittishbeermonth]

The Main Ingredient is Water

It’s obvious that the main ingredient in all beer is water, but Lagunita’s takes this notion to the extreme with “Hop”.  Before we get to that, the British tie-in.

For Christmas, Will got me the book, Alchemy - The Dark Art and Curious Science of Creating Magic in Brands, Businesses and Life.  By Rory Sutherland, Vice Chairman at Ogilvy UK.  If you want your fill of British idioms, this book is for you.  If you like a fun read with a bunch of interesting insights, ditto.

In an article in the British magazine The Spectator, Sutherland returns to a point he made in the book, about why water has no taste.  He expounds on a lesson he learned from psychophysicist Mark Changizi.

https://www.spectator.co.uk/article/reducing-activities-to-their-core-misses-the-point

“For a few million years, the most important contribution taste buds made to survival were to detect things in water that weren’t water: the very things, in short, which might indicate that the water wasn’t safe to drink. If we had evolved perception so that water tasted like Rioja or Dr Pepper, the sensory overload might have overpowered that hint of dead sheep from a rotting carcass 100 yards upstream: our taste buds are calibrated with water as the base line, the better to notice things which shouldn’t be in it.”

Photo credit, Jenny Lane  -  Gap of Dunloe, County Kerry, Ireland

Back to Lagunita’s Hop, hoppy refresher.  They don’t even call it beer, instead suggesting sparkling water, NA seltzer or IPA-inspired Refresher.  Hop is made with hops, yeast and water.  Why the yeast, you ask?  They explain that it is to biotransformate the hops and pull out the terpenes (aka, aroma compounds) of bubblegum, lime, lemon, tangerine, and a bit of pine.  They suggest you will taste citrus such as orange and grapefruit, tropical flavors like mango and sulfur compounds which “adds the yummy magic”.  These guys have alchemy (aka, BS) figured out.  

Zero alcohol, zero carbs, zero calories.  It’s almost like drinking sparkling water with a little hint of something funky – dead sheep perhaps?

[lepartiprisdeschoses]

1) I think the explanatory gap is about the problem of explaining how qualia arises from purely physical processes, not about how to direct access someone else's' experiences.

2) Psychologist Mark Changizi makes (imo) a good case that it's unlikely that our experiences of colors are radically different from each other. It's possible that what I see as violet you see as a dark blue, but the idea that colors could be completely different from person to person "severely underestimate[s] how much structure comes along with our color perceptions".

just a reminder to my new followers that if were ever able to cross the explanatory gap and share our color perception qualia with each other, proving finally that we all do see colors differently, my red is real as shit and youve been seeing crap fake red. so come to terms with your shit fake red while it lasts

[vulgartrader]

From Mark Changizi:

37.5% of small businesses in the U.S. have been lost due to lockdowns and the other interventions. More than half the businesses in leisure and hospitality were destroyed. In processing the devastation of small business over the last year, it is helpful to remember that the lockdowns and other interventions have been shown repeatedly not to have slowed the pandemic.

[3lub]

Humans Effectively Have X-Ray Vision | Mark Changizi

[yesdreamilyenchantingbouquet]

Family Tip: How Families and Educators Can Test For Colorblindness

Family Tip: How Families and Educators Can Test For Colorblindness

Guest author Dr. Mark Changizi, Mark Changizi is a theoretical neurobiologist, science writer, author and creator of VINO.vi. He stopped in with some valuable information. This is what he had to write. There are several early warning signs when a child is suffering from colorblindness. One tell-tell sign is that they smell their food before they eat it. Colorblind kids have a great nose for the…

[jonigirard3]

Self-awareness... is something tainting the water?

Self-awareness... is something tainting the water?

I get my inspiration where I can get it... so this article was inspired by a short article on Medium... 1. Two young fish are swimming in the lake and they pass by an older fish that is swimming the opposite way. The older fish nods at them in greeting, and says, "Morning, boys. How is the water?" The two young fish swim on for a while, then one of them looks over at the other and asks ‘What the hell is water?' OK, that is one story about water... and self-awareness. 2. The second story comes from a book I haven't read and probably won't. But the question is fascinating: Why doesn't water taste like anything? According to psychophysicist Mark Changizi, water tastes like nothing because evolutionarily, its lack of taste made it easier for us to taste anything harmful that might be tainting it. Bacteria from a rotting dead animal upstream could spell death for a human that ingested it, and flavorless water makes it easier for us to taste it. 3. And here is the third story: what I really want to write this article about:

https://www.yourvibration.com/54287/self-awareness-tainting-water/ Raise Your Vibration with Sophie