Special Senses - Unit 7

Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your sense of vision works -- and how it can be tricked.

"The eyes are the windows to the soul" as one well known saying goes. However, there's just more to the eyes than, well, meets the eye. They allow us to see, first and foremost, as well as allow us to distinguish shapes and sizes at first glance (literally). They also help us recognize our friends and our loved ones. What your eyes do isn't just limited to these though; so here are 25 crazy facts about your eyes.

This is the Science Friday (National Public Radio) video about LASIK eye surgery. The funny thing about this video is that the narrator, who is probably also the producer, is a lot more nervous about LASIK laser vision correction than the patient himself. He is cool as a cucumber, I am a surgeon, I had LASIK myself, didn't think it was a big deal and now I see fantastic. The video features Steven Vale, M.D., medical director of Acuity Laser Eye & Vision Center in Bethlehem, Pennsylvania. Dr. Vale is one of the most well-respected and experienced Lasik surgeons in the world. Dr. Vale has performed over 21,000 laser vision correction surgeries. Dr. Vale's ability and experience really comes out in this otherwise realistic and detailed glimpse at the world of laser vision correction surgery.

Watch a Cataract and High-Definition Lens Implant Surgery that restored vision from legally blind to 20/20 in 6 minutes..Laser #Cataract surgery and #High-Definition Vision with Auto-Focus Advanced technology #Implants are options.

Great overview of the senses from Paul Andersen and his Bozeman Science Channel...

Crash Course A&P continues the journey through sensory systems with a look at how your sense of hearing works. We follow sounds as they work there way into the ear where they are registered and transformed into action potentials. This mechanism not only helps you hear but also helps maintain your equilibrium.

Many of us take for granted a very extraordinary organ... our ears. To understand the ear, we need to understand what sound is.

http://www.bbc.co.uk/human Inside your ear, sounds set off a complex chain of events which involves some of the smallest bones in your body. These bones transmit the sound waves to tiny hair-like sensors that dance in tune to the world outside.

This is a video of the left ear. It is narrated, and shows the ear canal, ear drum (tympanic membrane), the three ear bones (malleus, incus, and stapes), behind the ear drum. It also show movement of the ear drum.

Stapedectomy and insertion of titanium/platinum prosthesis for the correction of conductive hearing loss secondary to otosclerosis using the endoscope. A 4 mm endoscope was used for the entire case without the use of an operating microscope. A 0.8 mm diamond stapes drill was used to create the stapedotomy and a 4.25 mm Medtronic Big Easy stapes prosthesis was placed.

An adult human can distinguish up to 10,000 odors. You use your nose to figure out what to eat, what to buy and even when it's time to take a shower. But how do the molecules in the air get translated into smells in your brain? Rose Eveleth charts the smelly journey through your olfactory epithelium and explains why scent can be so subjective.

A look at our sense of taste.

Just what is the difference between sensing and perceiving? And how does vision actually work? And what does this have to do with a Corgi? In this episode of Crash Course Psychology, Hank takes us on a journey through the brain to better explain these and other concepts. Plus, you know, CORGI!

What is the vestibular system? What are the different ways that it contributes to our sense of balance and spatial orientation? What are some of the causes of dizziness?