I remember when I was at Manor House in 1971, I was walking with a friend to the local pub one evening, and the road had a lot of trees along it. The person I was with had some sight and he was surprised that I was able to tell him when we were passing a tree, a post, or a parked car. ----- Original Message ----- From: <Clive.Lever@xxxxxxxxxxx>
To: <access-uk@xxxxxxxxxxxxx> Sent: Wednesday, May 22, 2013 2:44 PM Subject: [access-uk] Re: How the blind can use sonar to 'see' like a bat
Hi Peter,In those days the mantra was to normalise us at all costs, and school staff didn't always distinguish between mannerisms that had no real benefit but made us look out of place, and techniques like this which we used to adapt to our natural environment. The cry was always: "don't do that! It's blind!" By contrast, many Deaf people were taught to be proud of their Deafness. Discuss ... But not on this list.Best, Clive Clive Lever Diversity and Equality Officer Kent County Council Office: 01622 221163 Email: clive.lever@xxxxxxxxxxx Kent County Council Room G37 Sessions House Maidstone, Kent. ME14 1XQ -----Original Message-----From: access-uk-bounce@xxxxxxxxxxxxx [mailto:access-uk-bounce@xxxxxxxxxxxxx] On Behalf Of Ian MacraeSent: 22 May 2013 12:19 To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] Re: How the blind can use sonar to 'see' like a batThese heard images are often referred to as sound shadows. It's one of the things about blind people that periodically gets sighted people very excited.On 22 May 2013, at 11:16, Peter Beasley wrote:That is how we have always done it. When I was very young at boarding school, One of the mannerisms I and others had was to make clicking sounds which was discouraged by the staff. Obviously, they didn't realise that those clicks wer beneficial to totally blind children. ----- Original Message ----- From: <Clive.Lever@xxxxxxxxxxx> To: <access-uk@xxxxxxxxxxxxx> Sent: Wednesday, May 22, 2013 11:10 AM Subject: [access-uk] Re: How the blind can use sonar to 'see' like a batYes George. Way back in the sixties, I remember conversations at school about being able to hear lamp-posts. Some of the sightedteachers got it, while others didn't know what we were blethering on about.Perhaps it is a skill that blind people could teach blind people. Best, Clive Clive Lever Diversity and Equality Officer Kent County Council Office: 01622 221163 Email: clive.lever@xxxxxxxxxxx Kent County Council Room G37 Sessions House Maidstone, Kent. ME14 1XQ -----Original Message----- From: access-uk-bounce@xxxxxxxxxxxxx [mailto:access-uk-bounce@xxxxxxxxxxxxx] On Behalf Of George Bell Sent: 22 May 2013 09:48 To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] Re: How the blind can use sonar to 'see' like a bat My goodness! We could have told them that ages ago, and saved all that work. George. -----Original Message----- From: access-uk-bounce@xxxxxxxxxxxxx [mailto:access-uk-bounce@xxxxxxxxxxxxx] On Behalf Of Derek Hornby Sent: 21 May 2013 20:29 To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] How the blind can use sonar to 'see' like a bat I thought this may be of interest How the blind can use sonar to 'see' like a bat Daily Telegraph 21 May 2013 BLIND and visually impaired people can locate objects bylistening to echoes, just as bats and dolphins do, scientists have discovered.The built-in sonar may also help them with finding their way and with general spatial awareness. Researchers at Southampton University devised experiments with both sighted and blind people in a chamber where other sounds, such as the footsteps of people placing the objects, were eliminated. They found that blind people were able roughly to find objects from noises bouncing off their surface, while sighted people with good hearing showed potential to do so with practice. They tried sounds of different pitches and durations and discovered that some worked better than others and that it was more dif-ficult when the person was not facing the item, or it was further away. Dr Daniel Rowan, the lead author, said: "Some people were better than others but being blind doesn't automatically confer good echolocation ability. Ability probably gets even better with extensive experience and feedback." The researchers hope to develop training programmes and devices to help the blind as well as sighted people in situations where their vision is reduced. 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