You blink about every 4-6 seconds, says David Burr in Current Biology,1 adding to over 17,000 blinks a day. Each time the world goes black for 100 to 150 milliseconds, as the eyelids attenuate the light a hundredfold. Why don’t we see the world like a flickering movie? We generally perceive an uninterrupted stream of visual information. It turns out that there is a synchronized interlock between the blink response and the visual cortex of the brain, such that the brain temporarily suppresses vision during each blink. To find this out, a team of scientists in London, also publishing in Current Biology,2 repeated a 25-year-old ingenious experiment, but this time added functional MRI imaging on the brain. They made the retina see continuous light by shining it up the palate of test subjects wearing lightproof goggles, then watched how the brain reacted during blinks, even though the light seen by the retina (through the mouth) was continuous. Sure enough, the brain anticipated each blink by suppressing the visual cortex during the blink. This means that we don’t see the dark; when we blink, the brain just skips the interruption. See also the summary on EurekAlert.1David Burr, “Vision: In the Blink of an Eye,” Current Biology, Vol 15, R554-R556, 26 July 2005.2Bristow et al., “Blinking Suppresses the Neural Response to Unchanging Retinal Stimulation,” Current Biology, Vol 15, 1296-1300, 26 July 2005.While this feat was evolving, we wonder if it was like the early fighter planes trying to shoot machine guns through the propeller. Until engineers figured out how to synchronize the firing between the propeller blades, how many test pilots shot themselves down? (Uh, whoops….) How many cheetahs in a full gallop had to learn to coordinate their attacks when the lights were on, till they got frustrated and sent their brains back to Tinker Bell’s workshop for an upgrade?(Visited 9 times, 1 visits today)FacebookTwitterPinterestSave分享0
27 January 2014A flood of young, black talent from throughout KwaZulu-Natal and around South Africa is set to descend on the 2014 Dusi Canoe Marathon as the sport’s development programmes continue to make a big impact. The 120-kilometre marathon takes place between Pietermaritzburg and Durban from 13 to 15 February.In the past canoeing had been seen by many as a sport for the elite, but those times are gone and the KwaZulu-Natal (KZN) Department of Sport and Recreation has signed on as a major sponsor of the event, which includes providing support for paddlers from previously disadvantaged backgrounds.Provincial Sport and Recreation Minister Ntombikayise Sibhidla-Saphetha believes events such as the Dusi are important for the province.‘A major sporting event’“The Dusi Canoe Marathon is a major sporting event in the province and it is key for us to maintain it as an event,” Sibhidla-Saphetha said in a statement on Friday.“With it being such an important event, it draws in people from all over the country and even overseas, which turns the spotlight onto the province, something that is beneficial for us from both an economic and tourism point of view.”Drawing people to Pietermaritzburg and Durban for the event is an element that the Department of Sport and Recreation felt they needed to manage and promote and that has formed an important part of their relationship with the iconic race.Maximising economic growth“Pietermaritzburg and Durban are popular cities in the province when it comes to hosting major sporting events,” Sibhidla-Saphetha said. “With a three-day event, the amount of people that pass through both centres is increased significantly and maximising the economic growth from the influx of people is important for us as a department.”The department has not only taken on the role of being a major sponsor for the event but, by sponsoring this year’s race, they have also shown confidence in the numerous development initiatives that have been set up to encourage canoeing development throughout the province.‘Really encouraged’“We have been really encouraged by what we have seen in terms of development,” Sibhidla-Saphetha said. “There are a number of people that have grabbed the opportunity to spread the sport to the previously disadvantaged and we find that hugely positive.”A number of development initiatives have been set up around the province to help young people get involved in the sport of canoeing with the MEC praising the efforts of the Natal Canoe Club, the organisers of the Dusi, after the canoeing giants recently formed a strong squad of emerging paddlers.‘Making it accessible’“We really need to thank the Natal Canoe Club for what they have done for the development of canoeing. They have taken on the development of a number of paddlers and have gone a long way in taking the sport from a previously elite sport to making it accessible for everyone,” she said.Since the Natal Canoe Club Development Academy started in April 2013, over 2 000 children have been introduced to the sport. The club has also expanded its programme from its home at Camps Drift in Pietermaritzburg to two other sites, at Henley and Hopewell.Now into its 63rd year of existence, the Dusi Canoe Marathon stands as one of South Africa’s most iconic sporting events staged within and is regarded by many as one of the most prestigious canoeing event in the world.“It was important for us to be involved in one of the major events in the province and it is also vital that we give these young people the opportunity to experience being a part of such an important event,” Sibhidla-Saphetha said.‘Building social cohesion’“The sport, as all sports do, provides young people with a form of discipline and being able to work towards something is hugely important for them and for us. It goes a long way in building social cohesion in the province.”SAinfo reporter
Share Facebook Twitter Google + LinkedIn Pinterest By Ryan Martin, Ohio Ag Net Chief Meteorologist Scattered, light moisture should continue to hold over a large part of Ohio today. This will promote an overall damp feel once again, as temps stay at normal and even slightly below normal levels across the state and we can’t rule out a few hundredths to perhaps a quarter of an inch across about 70% of the state. Generally, though, we should see limited rain activity, with most of the moisture just getting held up in the atmosphere. We will start to see some changes to the pattern starting tomorrow.Tomorrow looks to dry down for most of Ohio. We may still have some lingering moisture trying to exit far eastern parts of the state early in the morning, but dry, sunny, warmer weather is the theme going forward. Southwest winds bring some higher temperatures to closer the week. We can expect temps to be above normal for Friday, Saturday and into Sunday. With the warming, it would not be out of the question for a few pop-up showers or thunderstorms to develop but that looks to be a bigger threat farther west, at least on Friday. Saturday late afternoon and evening show some better potential for pop up shower and especially thunderstorms, mostly over the northern third of the state. Keep an eye out for that action from US 30 northward, but also don’t limit it to just specifically that area. Instability will be a large issue in many areas for the weekend.Dry weather returns with another hot afternoon on Sunday, and temps ease a bit on Monday, while we likely stay dry. There is still the potential for a good chunk of next week to have moisture around, but it is shifting later in the week by a day or two.We can’t rule out showers moving into the state late Tuesday afternoon, then we have rain chances for Wednesday and Thursday. However, these are not rains that develop with a sweeping type front. Rather, moisture is going to try and slowly lift up into the eastern corn belt, and we will see multiple lines of action rotating through, circulating around a low to the south. This set up means we see largely hit and mis rains each day, but the areas that get rain can get a lot. Think of it as a bunch of striated bands of moisture training over the same area for a while before leaving. This will promote rain potential for the 2-and-a-half-day period of as little as .25”-.5” all the way up to 2 inches or more. So, we still have the potential for a very wet week next week. Combined coverage though will be only around 70%, with daily coverage at 40%. Dry weather makes a comeback late next week. The map shows 10-day cumulative rainfall potential across the state.In the extended window, one main front now arrives around the 26th that can bring rains of .25”-1” over about 80% of the state.Temps will be a story going into the weekend. We are already hearing folks talk up very warm air in the plains and western corn belt this weekend. We will see warming as well and can see some upper 80s to lower 90s. However, we need to stress that this is not a major problem. It is Summer, and summers have some hot spells, usually. This warmth will be coming after a relatively wet period over most of the corn belt, including Indiana. So, crops should handle 3 days of warm air just fine. As to the increasing fearmongering over a blazingly hot rest of June and all of July…we find nothing to support that kind of talk and consider it foolishness. For the next 10 days to 2 weeks, at least, we see conditions good for crop growth and development. Not perfect, but good.
Horn trainer promises ‘bloody Sunday’ LATEST STORIES Religiously following the training regimen charted by trainer/manager Joven Jimenez, Ancajas checked in at 114 pounds Saturday, a full pound lighter than Kinoshita.“I’m ready for war,” Ancajas, who totes a 26-win, 1-loss, 1-draw card with 17 knockouts, said upon the arrival of his team at Sofitel Hotel Sunday night.FEATURED STORIESSPORTSSEA Games: Biñan football stadium stands out in preparedness, completionSPORTSPrivate companies step in to help SEA Games hostingSPORTSWin or don’t eat: the Philippines’ poverty-driven, world-beating pool starsKinoshita is a dangerous foe with an almost similar record to Ancajas (25-1-1 ) topped by eight knockouts.A native of Panabo, Davao Del Norte, Ancajas has moved his wife and two children to a one-bedroom unit in Imus, Cavite, where Jimenez owns a gym. LOOK: Jane De Leon meets fellow ‘Darna’ Marian Rivera View comments Though he earned a measly $3,750 when he dethroned McJoe Arroyo last September, Ancajas received an additional P500,000 from Sen. Manny Pacquiao because he’s under the wings of MP Promotions.The 25-year-old Ancajas promised not to let his benefactor down.Jonel Dapidran, a cousin of Manny Pacquiao on his mother’s side, will also see action in the undercard of“Battle of Brisbane,” which will be beamed live in the United States by way of ESPN and 30 other countries.Only 19 years old, the 5-foot-9 Dapidran, who holds an 8-win, 1-loss card with 4 knockouts, will tangle with Australian Brent James in a light welterweight encounter.Dapidran, a three-year-pro, said he’s ready to repay the trust of Pacquiao.ADVERTISEMENT MOST READ Photo by Roy Luarca/INQUIRERBRISBANE, Australia—Driven by poverty when he won the International Boxing Federation crown, Jerwin Ancajas is now ready to bring his act to the global stage.Ancajas will be staking his title against Japanese Teiru Kinoshita in the chief support of “Battle of Brisbane” on Sunday.ADVERTISEMENT China furious as Trump signs bills in support of Hong Kong Don’t miss out on the latest news and information. Cayetano to unmask people behind ‘smear campaign’ vs him, SEA Games Pagasa: Kammuri now a typhoon, may enter PAR by weekend Sports Related Videospowered by AdSparcRead Next What ‘missteps’? Another vape smoker nabbed in Lucena Lacson: SEA Games fund put in foundation like ‘Napoles case’ Ethel Booba on hotel’s clarification that ‘kikiam’ is ‘chicken sausage’: ‘Kung di pa pansinin, baka isipin nila ok lang’ Robredo: True leaders perform well despite having ‘uninspiring’ boss PLAY LIST 02:49Robredo: True leaders perform well despite having ‘uninspiring’ boss02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games