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ruveyn
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15 Jan 2010, 12:11 pm

Scientist wrote:
ruveyn wrote:
Scientist wrote:
I wouldn't call science my obsession.
My username just describes who I am 8)
What is psychophysics?
Nice that you're asking :)

Dictionary:
psychophysics (sī'kō-fĭz'ĭks)
n. (used with a sing. verb)
The branch of psychology that deals with the relationships between physical stimuli and sensory response.

Psychophysics is a discipline within psychology that investigates the relationship between physical stimuli and their subjective correlates, or percepts. Psychophysics has been described as “the scientific study of the relation between stimulus and sensation” or, more completely, as “the analysis of perceptual processes by studying the effect on a subject’s experience or behaviour of systematically varying the properties of a stimulus along one or more physical dimensions.”

We (psychophysicists) conduct experiments in which we manipulate physical stimuli and measure participants' percepts in their behaviour: in responses, reaction times, movement times, movement trajectories.

Psychophysics is the discipline of my PhD project.
My project is on visual and haptic/tactile information processing and motor control.


Why not "neurophysics". The prefix psycho is from the Greek root meaning soul which we know does not exist. Sometimes it means mind, which has never been detect by any scanning device such as a PET scan or an MRI or an angiogram.

ruveyn



ruveyn
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15 Jan 2010, 12:13 pm

Scientist wrote:
ruveyn wrote:
Scientist wrote:
I wouldn't call science my obsession.
My username just describes who I am 8)
What is psychophysics?
Nice that you're asking :)



Have you got any results that might lead to an objective diagnosis of autism or Asperger's.? Right now we have to depend on behavioral clues which can be misleading.


Good luck in your researches. I hope you hit pay-dirt.


ruveyn



Jono
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15 Jan 2010, 3:05 pm

I'm obsessed with physics mainly. But technically, that's about to become my career.



gamefreak
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15 Jan 2010, 8:07 pm

I'm so so when it comes to science. I'm mainly into Biology.



andysmallwood
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16 Jan 2010, 6:10 pm

my favourite's physics because of pressure. you can use it for useful things like cooking or fun things like firing tennis balls arount the room



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17 Jan 2010, 11:13 am

ruveyn wrote:
Scientist wrote:
ruveyn wrote:
Scientist wrote:
I wouldn't call science my obsession.
My username just describes who I am 8)
What is psychophysics?
Nice that you're asking :)

Dictionary:
psychophysics
n. (used with a sing. verb)
The branch of psychology that deals with the relationships between physical stimuli and sensory response.

Psychophysics is a discipline within psychology that investigates the relationship between physical stimuli and their subjective correlates, or percepts. Psychophysics has been described as “the scientific study of the relation between stimulus and sensation” or, more completely, as “the analysis of perceptual processes by studying the effect on a subject’s experience or behaviour of systematically varying the properties of a stimulus along one or more physical dimensions.”

We (psychophysicists) conduct experiments in which we manipulate physical stimuli and measure participants' percepts in their behaviour: in responses, reaction times, movement times, movement trajectories.

Psychophysics is the discipline of my PhD project.
My project is on visual and haptic/tactile information processing and motor control.
Why not "neurophysics". The prefix psycho is from the Greek root meaning soul which we know does not exist. Sometimes it means mind, which has never been detect by any scanning device such as a PET scan or an MRI or an angiogram.
Dictionary:
psycho-
Psycho- is added to words in order to form other words which describe or refer to things connected with the mind or with mental processes.
neuro-
Neuro- is used to form words that refer or relate to a nerve or the nervous system.

Neurophysics is the branch of physics dealing with the nervous system. It covers a wide spectrum of phenomena from molecular and cellular mechanisms to techniques to measure and influence the brain and to theories of brain function. It can be viewed as an approach to neuroscience that is based on solid understanding of the fundamental laws of nature.

Psychophysics differs from neurophysics,
just like psychology differs from neurology.
The prefixes "psycho" and "neuro" are not interchangeable.

Psychophysics means something different from neurophysics.
Psychophysics is a discipline and a method in the broader field of psychology and is related to neuroscience.
Psychophysics studies the relation between physical stimuli and percepts and mental processes.
These percepts and mental processes can not be measured and studied using any brain imaging technique. We study products of the brain's nervous system. There is more than that which can be seen on PET scans, MRI scans or any other brain scan. I also want to stress that brain imaging techniques also have their constraints.

Ψυχη ("psyche")
1. breath
2. life, spirit
3. the immortal part of a person
4. the spirit of a dead person
5. the conscious self, as the seat of emotions, desires
6. the organ of thought: mind, reason
7. (philosophy) the universal spirit
8. butterfly, moth

So a Ψυχη or "psyche" does exist, at least in the meaning of "the conscious self, as the seat of emotions, desires" and in the meaning of "the organ of thought: mind, reason".
I would say the Ψυχη or "psyche" is the product of the brain's neural system.

Apart from a discipline, psychophysics also refers to a general class of methods that can be applied to study a perceptual system.
The name of the discipline and method of psychophysics originated in history:
Many of the classical techniques and theory of psychophysics were formulated in 1860 when Fechner published "Elemente der Psychophysik" ("Elements of psychophysics"). He coined the term "psychophysics", described research relating physical stimuli with how they are perceived, and set out the philosophical foundations of the field. Fechner wanted to develop a theory that could relate matter to the mind, by describing the relationship between the world and the way it is perceived. He was influenced by the work of German physiologist Weber. Fechner's work formed the basis of psychology as a science. Wundt, the founder of the first laboratory for psychological research, built upon Fechner's work.
ruveyn wrote:
Scientist wrote:
ruveyn wrote:
Scientist wrote:
I wouldn't call science my obsession.
My username just describes who I am 8)
What is psychophysics?
Nice that you're asking :)
Have you got any results that might lead to an objective diagnosis of autism or Asperger's.? Right now we have to depend on behavioral clues which can be misleading.
I do not study ASD.
I do not study any mental disorder.
I do fundamental research in humans.

I'm confident that in the future researchers will find out more about ASD so better diagnostic tests can be developed.
ruveyn wrote:
Good luck in your researches. I hope you hit pay-dirt.
Thanks, I've conducted 3 experiments for my PhD project, articles of which have all been published :)
I'm now finishing my PhD thesis, making it a nice book, which contains the publications.


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b9
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17 Jan 2010, 11:36 am

i am very much occupied with designing multidimensional "seeds" that beget fractal images.

am also lesser occupied with playing tunes i think of in multiple layers.

i am also very occupied with my flight simulator and designing my own planes to fly in.

i also have a space flight simulator, and it is extremely accurately programmed, and i like to blast into orbit at a pre-programmed angle, and then use trigonometric calculations as to where i should go retrograde and thrust up to de-orbit. i can blast off from heatrhrow and decline the trajectory at an an angle of 72 degrees east (sydney bound) , and after 36 minutes i must perform the reentry checklist and it is quite exciting.
my next ambition is to fly to the moon in it.

i am very much interested in things i want to play with and i focus sharply on them.



ForsakenEagle
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17 Jan 2010, 11:53 am

I am obsessed with math and physics. :)



iamtre
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18 Jan 2010, 11:17 am

Yes i love Biology and math. I am certified to teach both. Now if only I could find a job I enjoy....sigh.



robotfrommars
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20 Jan 2010, 7:45 am

I am obsessed with anything related to space travel.



justMax
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12 Feb 2010, 5:55 pm

I find that psychophysics subject quite interesting actually, Scientist.

I was just reading an article about a guy who takes multiple fMri's of subjects while they are looking at various images, and is designing algorithms that can reproduce the images they were seeing from the fMri data translated into voxels (three dimensional pixels) apparently.

Very interesting stuff, and it will be important if we're ever going to upgrade to mechanical brains eventually, keep at it!


As for science and math, they are one and the same I feel, science at it's best approaches mathematics in it's elegance, and math is elegance incarnate.



hale_bopp
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13 Feb 2010, 11:19 pm

yep!



hale_bopp
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13 Feb 2010, 11:33 pm

yep!



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14 Feb 2010, 4:58 pm

justMax wrote:
I find that psychophysics subject quite interesting actually, Scientist.
Thank you :)

justMax wrote:
I was just reading an article about a guy who takes multiple fMri's of subjects while they are looking at various images, and is designing algorithms that can reproduce the images they were seeing from the fMri data translated into voxels (three dimensional pixels) apparently.
I'm kind of skeptical about whether that's possible. But it sounds interesting, indeed. I'm curious to find out if he can do it.


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Villette
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19 Feb 2010, 7:20 am

i'm interetsed in evolution, genetics and biochemistry. unfortunately my math and physics sucks. :(



PunkyKat
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19 Feb 2010, 3:43 pm

Only certian branches such as zoology and veternary medicine.


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