Tag Archives | Perception

How to Mislead People with Graphics that Lie

The folks at Relatively Interesting have deconstructed how easy it is to manipulate graphs in order to strengthen one’s agenda.

Here’s the first thing chart/graph-makers do to twist our perceptions:

1 – Use broken scales to exaggerate drama, even if there isn’t any.

break-scale-in-bar-graph

Looks like the Yankees are killing it (graph above).  On quick glance, the graphic on the left  implies that they’re winning three or four time as many games as the Red Sox.  But upon further inspection, once the scale is adjusted, we see the difference more like 11%.

Read the rest

Continue Reading

Perceive this: The human brain controls alpha-band oscillation phase to effect temporal predictions

Fig. 3. Spatial and frequency specificity of the alpha-band signal. (A) Scalp topography of absolute alpha power 400 ms before target onset, with electrode Pz indicated. (B) FFT of the pretarget data, indicating a peak in power at 10.6 Hz. Credit: Samaha J et al. (2015) Top-down control of the phase of alpha-band oscillations as a mechanism for temporal prediction. Proc Natl Acad Sci USA 112(27):8439-8444.

Fig. 3. Spatial and frequency specificity of the alpha-band signal. (A) Scalp topography of absolute alpha power 400 ms before target onset, with electrode Pz indicated. (B) FFT of the pretarget data, indicating a peak in power at 10.6 Hz. Credit: Samaha J et al. (2015) Top-down control of the phase of alpha-band oscillations as a mechanism for temporal prediction. Proc Natl Acad Sci USA 112(27):8439-8444.

Stuart Mason Dambrot via Medical Express:

Standard models of perception are stimulus-driven, meaning that the external perceptual event drives the brain’s perception-related activity. However, the tide may be turning: recent ideas suggest that our perceptual experiences and visually guided behaviors are influenced by top-down processes in the brain – specifically, the brain’s predictions about the external world. Recently, scientists at University of Wisconsin–Madison demonstrated that perceptual expectations about when a stimulus will appear are instantiated in the brain by optimally configuring prestimulus alpha-band oscillations in order to optimize the effectiveness of subsequent neural processing.

Read the rest
Continue Reading

Perceptual Shift — 1,252 Floating Balls Form An Eye When Looking From The Right Angle

1198-990x659

via DesignYouTrust:

Perceptual Shift is the latest in my series of sculptural works that I refer to as expanded graphics, limited color graphics that are exploded and rendered in three dimensional space. This work is the first of its kind, it’s a 3D halftone. Black and white halftone images are traditionally produced using black circles on a white surface. This work moves away from the traditional picture plane using the white room as its canvas. The flat black circles have become floating black spheres.

Read the rest

Continue Reading

Consciousness has less control than believed, according to new theory

Hartwig HKD (CC BY-ND 2.0)

Hartwig HKD (CC BY-ND 2.0)

San Francisco State University via EurekAlert:

Consciousness — the internal dialogue that seems to govern one’s thoughts and actions — is far less powerful than people believe, serving as a passive conduit rather than an active force that exerts control, according to a new theory proposed by an SF State researcher.

Associate Professor of Psychology Ezequiel Morsella’s “Passive Frame Theory” suggests that the conscious mind is like an interpreter helping speakers of different languages communicate.

“The interpreter presents the information but is not the one making any arguments or acting upon the knowledge that is shared,” Morsella said. “Similarly, the information we perceive in our consciousness is not created by conscious processes, nor is it reacted to by conscious processes. Consciousness is the middle-man, and it doesn’t do as much work as you think.”

Morsella and his coauthors’ groundbreaking theory, published online on June 22 by the journal Behavioral and Brain Sciences, contradicts intuitive beliefs about human consciousness and the notion of self.

Read the rest
Continue Reading

Philosophy Recap: Self-Knowledge

Tony Hall (CC BY-ND 2.0)

Tony Hall (CC BY-ND 2.0)

I love Stanford’s Encyclopedia of Philosophy, it’s a great resource. Here’s the introduction and table of contents to their entry on Self-Knowledge.

via Stanford Encyclopedia of Philosophy:

In philosophy, “self-knowledge” standardly refers to knowledge of one’s own sensations, thoughts, beliefs, and other mental states. At least since Descartes, most philosophers have believed that our knowledge of our own mental states differs markedly from our knowledge of the external world (where this includes our knowledge of others’ thoughts). But there is little agreement about what precisely distinguishes self-knowledge from knowledge in other realms. Partially because of this disagreement, philosophers have endorsed competing accounts of how we acquire self-knowledge. These accounts have important consequences for a broad range of philosophical issues, especially issues in epistemology and the philosophy of mind.

This entry focuses on knowledge of one’s own particular mental states. A separate topic sometimes referred to as “self-knowledge”, knowledge about a persisting self, is addressed in a supplement:Knowledge of the Self.

Read the rest
Continue Reading

Swimming In The God Pool

Ottways National Park, photo credit: James W. Jesso

Look at the cosmos as a pool where the greatest depths are the most inclusive. Look at the cosmos as expanded dimensions of consciousness and existence. As we move closer to the surface, we pass through galactic and planetary consciousness, in and through genetic and molecular history, upwards to the collected human unconscious before touching our cultural shallow end where we splash with our thinking minds across the surface of this vast archaic profundity.

Read the rest

Continue Reading

Depression Distorts People’s Perception of Time, Study Finds

oatsy40 (CC BY 2.0)

oatsy40 (CC BY 2.0)

Depression can lead to time distortion.

via PsyBlog:

Most people experience differences in how time is perceived, with or without depression.

For example, 10 minutes in the dentist’s waiting-room can seem like an hour.

While an enjoyable conversation with a good friend can pass in the blink of an eye.

What a new study finds, though, is that depressed people have a general feeling that time is passing more slowly, or even that it has stopped.

Dr. Daniel Oberfeld-Twistel, one of the study’s authors, said:

“Psychiatrists and psychologists in hospitals and private practices repeatedly report that depressed patients feel that time only creeps forward slowly or is passing in slow motion.

The results of our analysis confirm that this is indeed the case.”

The strange part is what happens when people with depression are asked to judge intervals of time.

For example, they are asked to watch a movie and estimate its length.

Read the rest
Continue Reading

How Time Tricks Our Minds

(Photo: darrentunnicliff/Flickr)

(Photo: darrentunnicliff/Flickr)

Rick Paulas via Pacific Standard:

“Time passes slowly up here in the mountains / We sit beside bridges and walk beside fountains / Catch the wild fishes that float through the stream / Time passes slowly when you’re lost in a dream”  —Bob Dylan, “Time Passes Slowly”

No, Bob. It doesn’t.

Time doesn’t pass slowly or quickly, unless you happen to be near a black hole. (Even then, it’s more time relative to other people’s experience of time, not time itself.) Time just passes, same as always, one second at a time. But there are certain instances when, despite this knowledge, it just doesn’t feel that way. Back in school, those last 20 minutes before the bell rung just seemed … to … take … forever. Or when you’re at an amazing party, and it’s over before you know it.

Last week, I experienced a subtle time shift of my own.

Read the rest
Continue Reading

Intel Panel ‘Very Close’ on Killing NSA Phone Programs

This reminds me of a Richard Pryor Joke. “The reason people use a crucifix against vampires is because vampires are allergic to bullshit.” They’re also allergic to sunlight, much like the NSA.

Crypt

Crypt (Photo credit: chb1848)

via Politico

The House Intelligence Committee’s Republican and Democratic leaders said Thursday they’re nearing agreement on legislation that would end the National Security Agency’s bulk collection of U.S. citizens’ telephone data.

Negotiations on some key details remain fluid, but Ranking Member Dutch Ruppersberger (D-Md.) said in an interview that he’s “very close” to a deal with Chairman Mike Rogers (R-Mich.) on a plan that would allow phone companies to hold telephone records now collected by the NSA and conduct individual searches needed to pinpoint suspicious activity.

“We’ve got to have legislation that will take away the concern and perception that people are being listened to,” Ruppersberger said. He added that he hoped to reach an agreement before the end of this month.

Read the rest
Continue Reading

Your Brain Sees Things You Don’t

spoonVia ScienceDaily:

University of Arizona doctoral degree candidate Jay Sanguinetti has authored a new study, published online in the journal Psychological Science, that indicates that the brain processes and understands visual input that we may never consciously perceive.

The finding challenges currently accepted models about how the brain processes visual information.

A doctoral candidate in the UA’s Department of Psychology in the College of Science, Sanguinetti showed study participants a series of black silhouettes, some of which contained meaningful, real-world objects hidden in the white spaces on the outsides.

Saguinetti worked with his adviser Mary Peterson, a professor of psychology and director of the UA’s Cognitive Science Program, and with John Allen, a UA Distinguished Professor of psychology, cognitive science and neuroscience, to monitor subjects’ brainwaves with an electroencephalogram, or EEG, while they viewed the objects.

“We were asking the question of whether the brain was processing the meaning of the objects that are on the outside of these silhouettes,” Sanguinetti said.

Read the rest
Continue Reading