Aiden McGeady 1 Everton winger Aiden McGeady has joined Sheffield Wednesday on loan until the end of the season.The Republic of Ireland international McGeady has made just one appearance for the Toffees this term and is keen for regular first-team football ahead of Euro 2016.Everton had agreed terms for a similar deal with another unnamed Championship club, understood to be Blackburn, while Leeds had also been linked with the player.McGeady started out at Celtic and won four Scottish Premier League titles, two Scottish FA Cups and two Scottish League Cups during his six years at the club.Spartak Moscow paid Celtic £9.5million to sign McGeady in 2010 and after scoring 13 goals in 93 appearances for the Russian side he returned to the UK with Everton for an undisclosed fee in January 2014.McGeady has made 76 appearances for the Republic of Ireland since making his debut in July 2004 against Jamaica.
Journal information: Proceedings of the National Academy of Sciences (Phys.org) —How do bees find their way home? Until now, scientists thought bees navigated by calculating their position relative to that of the sun. Randolf Menzel of the Free University of Berlin and colleagues tested this hypothesis by disrupting bees’ circadian clocks. They found bees were able to navigate successfully, despite being unable to use the sun as an aid, suggesting that bees create cognitive maps. The study appears in the Proceedings of the National Academy of Sciences. Explore further Citation: Research shows bees might create cognitive maps (2014, June 3) retrieved 18 August 2019 from https://phys.org/news/2014-06-bees-cognitive.html To get to the store and back without getting lost, you use a cognitive map. Mammals, and possibly all vertebrates, create cognitive maps, which they update constantly, by remembering landmarks and storing information about their locations in their brains. A cognitive map allows you to point toward your home, even when you’re in a windowless room.Creating a cognitive map is a complex mental task. Scientists believe we form cognitive maps in a part of the brain known as the hippocampus. Bees have tiny brains and nothing resembling a hippocampus. Therefore, scientists thought they must not use cognitive maps and depend on the sun to guide them instead.To test this belief, Menzel’s team tried tampering with bees’ sense of time, so the bees wouldn’t be able to use the sun to calculate their position. The researchers anesthetized a group of bees, leaving them unconscious for six hours. This meant when the bees awoke, they didn’t know what time it was and the sun appeared to be in the wrong position in the sky.The researchers then released the bees in an unfamiliar field and radar tracked them to see if they would be able to find their way back to the hive. If the bees relied solely on the sun to navigate, they would be lost. The bees did start out by flying in the wrong direction, but they soon turned around, getting back to the hive as quickly as a control group of bees the team hadn’t anesthetized. This meant the bees used something other than the sun to get them home. The researchers think this is probably a cognitive map. They believe that in addition to using the sun as a compass, bees create a mental map of the terrain they fly over by looking for landmarks, such as rows of bushes.Menzel and his team say scientists studying the mammalian brain should bear in mind that bees might be able to create complex mental maps despite having brains many times smaller than the hippocampus of a rat. © 2014 Phys.org This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. More information: Way-finding in displaced clock-shifted bees proves bees use a cognitive map, James F. Cheeseman, PNAS, DOI: 10.1073/pnas.1408039111AbstractMammals navigate by means of a metric cognitive map. Insects, most notably bees and ants, are also impressive navigators. The question whether they, too, have a metric cognitive map is important to cognitive science and neuroscience. Experimentally captured and displaced bees often depart from the release site in the compass direction they were bent on before their capture, even though this no longer heads them toward their goal. When they discover their error, however, the bees set off more or less directly toward their goal. This ability to orient toward a goal from an arbitrary point in the familiar environment is evidence that they have an integrated metric map of the experienced environment. We report a test of an alternative hypothesis, which is that all the bees have in memory is a collection of snapshots that enable them to recognize different landmarks and, associated with each such snapshot, a sun-compass–referenced home vector derived from dead reckoning done before and after previous visits to the landmark. We show that a large shift in the sun-compass rapidly induced by general anesthesia does not alter the accuracy or speed of the homeward-oriented flight made after the bees discover the error in their initial postrelease flight. This result rules out the sun-referenced home-vector hypothesis, further strengthening the now extensive evidence for a metric cognitive map in bees. Bees dance the light fantastic Similar flight speed and accuracy of bees with (red) and without (blue) clock-shifting. Credit: James F. Cheeseman
Kolkata: A Bangladeshi national has been arrested at Netaji Subhas Chandra Bose International (NSCBI) Airport in Kolkata for allegedly carrying foreign currency illegally worth Rs 20 lakh.The Central Industrial Security Force (CISF) personnel have nabbed the person identified as Farman Chowdhury Reza and immediately handed him over to the Customs department officials. According to the CISF officials, Reza was about to board a flight to Chittagong scheduled to take off at 11:10 am. During the security check around 10:40 am, on-duty CISF personnel saw Reza behaving suspiciously in the Also Read – Rain batters Kolkata, cripples normal lifesecurity check queue. While he was walking, it seemed like Reza had something inside his shoes as the pace was slow and unnatural. Smelling a rat, a CISF official was informed by the jawans. Reza was immediately ordered to step out of the queue. He was questioned on the spot. As Reza fumbled, the CISF official detained him and took Reza to the CISF facility at the airport. Reza was then interrogated. Though he claimed to be clean, the CISF officials asked Reza to take off his shoes. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedHaving no other way out, Reza had to follow the orders. After he took off his shoes, the CISF officials found a huge amount of foreign currency denominations of several countries concealed inside his shoe soles. Following which Reza’s baggage was opened. The bag had more foreign currency denominations and some other valuables. He was asked about the foreign currency and other valuables but failed to produce any valid reason and document. The CISF informed that they have found 6,700 USD, 6,000 Australian Dollar, 2,400 Canadian Cent, 1,720 Bangladesh Taka, 13,540 INR, five expensive wrist watches and two expensive mobile phones from Reza. All the articles were seized. Later, Reza was handed over to the Customs department for further action.