This is so interesting, so many people ask me about this, now I can explain to them better. thanks for this.
Thanks / Regards "May the Horse Be With You" Carl de Campos (Blind_Bat) Cell: 072 486 8506 E-mail: carldc@xxxxxxxxxx Skype: carl.de.campos----- Original Message ----- From: "Jacob Kruger" <jacobk@xxxxxxxxxxxxxx>
To: "BlindZA" <blindza@xxxxxxxxxxxxx> Cc: "NAPSA Blind" <blind@xxxxxxxxxxxx> Sent: Saturday, August 08, 2009 2:06 PM Subject: [blindza] Fw: Human echolocation and blind mountain biking: Very interesting with the example they mention trying out. Jacob Kruger Blind Biker Skype: BlindZA '...fate had broken his body, but not his spirit...'----- Original Message -----
MindHacks.com, USA Human echolocation and blind mountain biking: July 21, 2009 Psychologist Lawrence Rosenblum has written an excellent short article about a remarkable group of blind mountain bikers who apparently use echolocation to avoid obstacles by making loud click sounds as they ride. Rosenblum has studied human echolocation in the lab and has shown that we all have some ability to get an idea of the spatial layout of our environment from sound reflection. But one of the most interesting bits is where he discusses the fact that while echolocation uses sound, we don't always process it as a conscious hearing experience. It can seem to just be a 'sense' of where objects are. To get a sense of how echolocation works, try this. Hold your hand up about one foot in front of your face with your palm facing your mouth. Put your front teeth together, open your lips, and make a continuous shhhhhh sound. As you make this sound, slowly bring your hand toward your mouth. You will hear the shhhh sound change. What you’re hearing is the sound reflecting from your hand colliding with the sound leaving your mouth. This interference turns out to be one of the most important types of sound dimensions we use to echolocate objects at close distances. But this demonstration is exaggerated. The interference patterns used for echolocation are usually too subtle to be consciously heard. This highlights one of the most amazing aspects of echolocation: It’s rarely experienced as sound. Try using your shhhh sounds to walk slowly toward a wall with your eyes closed. As you come close to the wall, you’ll experience its presence as more of a feeling than a change in sound. It may feel as if there are air pressure changes on your face, an experience also reported by the blind (echolocation was once called “facial vision”). Echolocation is truly one of your implicit perceptual skills: It allows you to detect aspects of your environment without even knowing which sensory system you’re using. LINKS Link to post of echolocation and blind mountain bikers. http://www.psychologytoday.com/blog/sensory-superpowers/200907/mountain-biking-the-blind pdf of Rosenblum study on human echolocation. http://www.faculty.ucr.edu/~rosenblu/PublicationPDFs/Echolocating%20Distance.pdf Link to DOI entry for same. http://dx.doi.org/10.1207/S15326969ECO1203_1 —Vaughan. Posted at July 21, 2009 12:00 PM SOURCE http://www.mindhacks.com/blog/2009/07/human_echolocation_a.__________ Information from ESET NOD32 Antivirus, version of virus signature database 4318 (20090808) __________
The message was checked by ESET NOD32 Antivirus. http://www.eset.com ---------- To send a message to the list, send any message to blindza@xxxxxxxxxxxxx ----------To unsubscribe from this list, send a message to blindza-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject line
--- The 'homepage' for this list is at http://www.blindza.co.za ---------- To send a message to the list, send any message to blindza@xxxxxxxxxxxxx ---------- To unsubscribe from this list, send a message to blindza-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject line --- The 'homepage' for this list is at http://www.blindza.co.za
