14 Oct 2016 My afternoon drawing (a mountain energy system), my new backyard spider and NPR article Spiders can hear, DB Glass Spider and Underground

Hello to you, it’s about 7:27 pm on this Friday evening as I write to you.  How has your day been?  Probably very busy if you are like most people!  I’ve had a real good day and am looking forward to this weekend.  On Sunday we are looking forward to attending my father-in-law and the band he plays with, Panther Brass, are putting on a concert in Mansfield.  I absolutely love live entertainment of any kind and seeing Kyle’s Dad play is an absolute delight!  If you are from this area and enjoy live music, here is info:

Public · Concert · Hosted by Panther City Brass

I did an interesting drawing this afternoon.  Once I got started with it, I was just “in it!”  Even with loud traffic behind our house, our dogs mouthing off and the occasional airplane overhead…stayed focused!  That’s what drawing does for me – helps me focus and get into an almost altered state.

 

http://www.npr.org/sections/thetwo-way/2016/10/14/497931790/a-spider-across-the-room-can-hear-you-study-finds

A Spider Across The Room Can ‘Hear’ You, Study Finds

October 14, 20162:17 PM ET

Scientists have discovered a new kind of spidey sense.

We already knew that jumping spiders have exceptional vision. We knew that they are great at perceiving vibrations. We even knew that they can “hear” at extremely close range.

But in research published in Current Biology, researchers at Cornell University found that a common species of jumping spider called Phidippus audax can actually hear from much farther away than we thought — at distances of 10 feet away, or more.

“I’ve worked with these animals for a long time now and all of a sudden you realize that their world is completely different from what you thought,” Paul Shamble, a fellow at Harvard and co-first author of the study, tells The Two-Way. “You thought they were just these little creatures of vibration and vision, and now all of a sudden you realize that they can hear, too.”

Spiders don’t have ears, as Shamble explains. He says humans pick up pressure waves to detect sound, while it appears that these spiders are able to “hear” because they have “specialized hairs that pick up the actual particle movement.”

Take a look at this video released by the research team of a spider’s response to a low-frequency sound:

See article for video

Credit: Charlie Walcott/Hoy Lab

The researchers actually discovered this by accident, he adds. It started with a fortuitous chair squeak.

“We were doing these studies on how the brains of jumping spiders perceive vision,” he explains, using technology that actually allowed them to hear neurons firing in a spider’s brain. Shamble’s colleague and co-author Gil Menda was working in the lab when he backed up his chair, which let out a loud squeak.

“The neurons started firing and he thought, oh, that’s kind of weird,” Shamble says. To test this, Shamble clapped — first, right next to the spider. The neurons fired. He continued to back up, expecting the firing to stop, because they thought spiders could “hear” only at very close range.

“It kept on happening. And after a while I was standing out in the main lab, more than 3 meters away from the spider, clapping, and it was still happening,” he says. “It was one of those strange moments, where it was like, based on what we know, this shouldn’t be happening, but it definitely is.”

Shamble says the researchers tested the spiders’ hearing using both behavioral experiments (where they observed the spiders’ reaction to sounds) and neural recordings (where they could determine “exactly what frequencies they were responding to”).

The spiders tended to “freeze” in place when they heard a low-frequency sound, which Shamble says is likely an anti-predator response.

That’s backed up by the neural recordings because the frequencies that spiders would respond to “are relatively low and they’re right in the range of frequencies for especially sort of largish flying insects,” Shamble says. That suggests the hearing could be a way to detect predators such as wasps.

There could be other uses for the “hearing” ability, too, he says, noting that jumping spiders have “really elaborate courtships.”

They set up the experiment to make sure the spiders were responding to sound traveling through the air and not vibrations in the room.

Phiddipus audax and its close relatives are among the most common types of jumping spiders in the United States. Shamble says their research raises an important question — “is this something special to jumping spiders, these jumping spiders, or is this something that is sort of an underappreciated feature of all spiders?” He says he suspects other spiders can do this, too.

Knowing that spiders can detect sounds at long range changes the way we think about how they perceive the world.

“It’s really exciting to realize that these creatures that have sort of lived next to us for as long as humans have been around, that there are these little mysteries that we didn’t really know about how they live and how they make their lives,” Shamble says.


All this about spiders made me think of the song by David Bowie called Glass Spider  and Underground:

Glass Spider

Up until one century ago there lived,
In the Zi Duang provence of eastern country
A glass-like spider.
Having devoured its prey it would drape the skeletons over its web,
In weeks creating a macabre

Shrine of remains
Its web was also unique in that it had many layers,
Like floors in a building

At the top of this palace-like place, assembled with almost apparent
Care, were tiny, shining objects, glass, beads, dew-drops.
One could almost call it an altar.
When the breeze blew through this construction,
It produced sounds of wailing, crying.
Tiny wails, tiny cries.

The baby spiders would get scared and search frantically
For their mother.
But the Glass Spider would have long gone, having known that the babies
Would survive someone on their own.
Oh-The Glass Spider had blue eyes almost like-a human’s.
They shed tears at the wintered turn of the centuries.

Don’t you hear this wasted cry, Life is over you
(Mummy come back ’cause the water’s all gone)
But you’ve seen who’s in heaven. Is there anyone in hell
(Mummy come back ’cause it’s dark now)
Take care, take care.
(Mummy come back ’cause the water’s all gone)
Somewhere she glows divine. Somewhere she wakes alone.
But you, you’ve promise in your lovin’ eye. God it’s dark now.

Jah Jah Jah Jah Jah
Jah Jah Jah Jah Jah

Gone, Gone the water’s all gone
Mummy come back ’cause the water’s all gone
Stay low on the ground, fire can drive you, savage and afraid
Spitting the dawn, come come come along before the animals awake
Run, run, we’ve been moving all night, rivers to the left.
If your mother don’t love you then the riverbed might
Gone, gone, the water’s all gone
Mummy come back ’cause the water’s all gone

Jah Jah Jah Jah Jah
Jah Jah Jah Jah Jah

Gone gone the water’s all gone
Mummy come back ’cause the water’s all gone

Songwriters: DAVID BOWIE
© Peermusic Publishing, TINTORETTO MUSIC
For non-commercial use only.
Data from: LyricFind

 

Underground

No one can blame you for walking away
But too much rejection, uh-huh
No love injection, nothing

Life can be easy
It’s not always swell
Don’t tell me truth hurts, little girl
‘Cause it hurts like hell

But down in the underground
You’ll find someone true
Down in the underground
A land serene, a crystal moon

A-ha

It’s only forever
Not long at all
Lost and lonely
That’s underground, underground

Daddy, daddy, get me out of here (heard about a place today)
Ha, ha, I’m underground (nothing ever hurts again)
(Nothing ever hurts again) well, I found a place
(Daddy, get me out of here) nothing ever hurts again
(Hoping for the underground) down and down and get me out of here
(Hoping for the underground) ha, ha, I’m underground
(Get me underground) sister, sister, please take me down
Ha, ha, I’m underground (gotta get me out of here)
Daddy, daddy get me out

No one can blame you for walking away
But too much rejection, uh-huh
No love injection, nothing

But down in the underground
You’ll find someone true
Down in the underground
A land serene, a crystal moon

A-ha

It’s only
It’s only forever
It’s not long at all
They’re lost and they’re lonely
That’s underground, underground

Daddy, daddy get me out
Heard about a place today (heard about a place today)
Nothing ever hurts again (nothing ever hurts again)
Daddy, daddy get me out of here (daddy, get me out of here)
Ha, ha, underground (hoping for the underground)
Sister, sister, please (hoping for the underground)
Ha, ha, I’m underground (get me underground)
Daddy, daddy, get me out

Under, under
Under, underground
Underground
Under, underground
Under, underground
Under, underground
Wanna live underground
Wanna live underground
Daddy, daddy, get me out of here
Ha, ha, underground
Sister, sister, please take me out of here
Ha, ha, I’m underground
Ha, ha, I’m underground
Ha, ha, underground
Daddy, daddy, please
Daddy, daddy, please
Wanna move underground
Wanna move underground
Sister, sister, take me too
Sister, sister, take me too

Songwriters: DAVID ROBERT JONES
© SPIRIT TWO MUSIC
For non-commercial use only.
Data from: LyricFind
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2 comments on “14 Oct 2016 My afternoon drawing (a mountain energy system), my new backyard spider and NPR article Spiders can hear, DB Glass Spider and Underground

    • You are right! As soon as I read your comment I could see it LOL! A spider and it’s web are an energy system for sure! 🙂

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