Tuesday, July 16, 2013

 

SCIENTISTS COULD SEE THROUGH CATS EYES IN 1999
In 1999 scientists proved that they could look through the eyes of a cat. BBC News Online Science Editor Dr David Whitehouse reported: ‘ A team of US scientists have wired a computer to a cat’s brain and created videos of what the animal was seeing… To their amazement they say they saw natural scenes with recognisable objects such as people’s faces. They had literally seen the world through cat’s eyes.’

Monday, October 11, 1999 Published at 19:10 GMT 20:10 UK


Sci/Tech

Looking through cats' eyes

Fuzzy but recognisable

By BBC News Online Science Editor Dr David Whitehouse These are the first pictures from an extraordinary experiment which has probed what it is like to look through the eyes of another creature. As reported on BBC News Online last week, a team of US scientists have wired a computer to a cat's brain and created videos of what the animal was seeing. By recording the electrical activity of nerve cells in the thalamus, a region of the brain that receives signals from the eyes, researchers from the University of California at Berkeley were able to view these shapes. The team used what they describe as a "linear decoding technique" to convert the signals from the stimulated cells into visual images. Dr Yang Dan, Assistant Professor of Neurobiology at UC Berkeley, Fei Li and Garrett Stanley, now Assistant Professor of Biomedical Engineering at Harvard University conducted 11 experiments. They recorded the output from 177 brain cells that responded to light and dark in the cat's field of view.






[ image: A cat's-eye view of a woodland scene]
A cat's-eye view of a woodland scene

In total, the 177 cells were sensitive to a field of view of 6.4 by 6.4 degrees. As the brain cells were stimulated, an image of what the cat saw was reconstructed. The first example is a face. Although the reconstructed image is rather fuzzy, it is clearly recognisable as a version of the original scene. It is possible that a clearer image could be obtained by sampling the electrical output of more cells. In the cat's brain, as in ours, the signals from the thalamus cells undergo considerable signal processing in the higher regions of the brain that improve the quality of the image that is perceived. Taking an image from a region of the brain before this image enhancement has taken place will result in a poorer image than the cat is able to see. The other two examples show two woodland scenes, with tree trunks being the most prominent objects. By being able to tap directly into the brain and extract a visual image the researchers have produced a "brain interface" that may one day allow the control of artificial organs and indeed machines by thought alone. It is also conceivable that, given time, it will be possible to record what one person sees and "play it back" to someone else either as it is happening or at a later date.

[ image: A clearer image could be obtained by sampling more cells]
A clearer image could be obtained by sampling more cells

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i say
there should be new laws
new laws that make all wireless transmission visible
even for just one day
visible
Like the way a cartoon depicts that a radio is making noise
with wavely lines
Wavey lines everywhere i say.
if even for just one day
that no treansmission should be invisible.
Let even the remote control that turns on and off the tv ,let that magical beam be "lit up" and obvious.
Let us SEE the wireless transmissions .let them be noticable
if even for one day
let them be known like they put an awful smell in gas lt we might know immediately that "the gas is on".
Imagine what the world .wopuld look like if every unseen wireless transmission from  one's bluetooth ,to one's cell phone to one's GPS were lit up like fireworks.
This way.
The experiments.
might stop.
as what would one say
if one saw those wavey lines that indicate transmission
coming in and out of another person's head.
"well ,"EVAN says ,Evan graphs,"One might simply ask this lucky person,
"Where can i get that? And are the monthly rates reasonable?"

 

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