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Traveling itself is enjoyable and if it?s a trip with friends or a huge group of people, it adds more fun to it. But, you need travel insurance for that too. Instead of getting each member insured individually, you can avail a group insurance. Group insurance is the kind of insurance that covers the entire group you are in. So, if you opt for group travel insurance, you are assured that everyone in the group is insured and is safe from any kind of mishaps if happens to anyone in the journey.

When you are getting group travel insurance, you can get it from online or through direct travel insurance booking from the company itself. This can help you get the best and the cheapest deal in the market.

Things covered

Group insurance provides a 185 days of cover along with other benefits like:

- Cancellation cover

- Personal accident cover

- Inclusive business travel insurance cover

- Emergency medical assistance 24 hours a day, 365 days a year

- Pre-medical expenses covered

Buying individual cover for each and everyone in the group can be burdensome and may involve a lot of paperwork. So, such insurances can be good idea to save time as well as money.

Advantages

- It covers your luggage or personal belongings and you get paid back if these are lost.

- When you are traveling in a group, getting such an insurance is a good idea as buying in bulk can be cheaper than individual insurances.

- You and your group get paid back if the trip gets canceled before it kicks off.

- It covers any kind of medical or illness expenses. That means if anyone in the group gets sick or hurt, you will get the medical expenses covered.

- Everyone in the group is covered in the same way and in the same price irrespective of age, gender, race, etc.

- Business companies can go for group insurance which covers the employees traveling. Business group travel insurance also cover things like missed meetings, equipments and other necessary reimbursements.

Direct travel insurance-the way to cheap policy

If you buy an insurance online, you are likely to get them at cheaper rates because insurances available online are directly offered by the insurance providers. You will get the names of providers who offer direct insurance without the retail outlets or travel agents in between. There are different policies offered by different insurers but when you buy it you must check out the policy to cover your needs because there is a big difference between the cost of the cover and what is covered.

Buying direct travel insurance is the best way to find cheap insurance policy. You just need to do some research before you go for the one.

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ScienceDaily (Apr. 2, 2012) ? A team of University of Pittsburgh mathematicians is using computational models to better understand how the structure of neural variability relates to such functions as short-term memory and decision making. In a paper published online April 2 in Proceedings of the National Academy of Sciences (PNAS), the Pitt team examines how fluctuations in brain activity can impact the dynamics of cognitive tasks.

Previous recordings of neural activity during simple cognitive tasks show a tremendous amount of trial-to-trial variability. For example, when a person was instructed to hold the same stimulus in working, or short-term, memory during two separate trials, the brain cells involved in the task showed very different activity during the two trials.

"A big challenge in neuroscience is translating variability expressed at the cellular and brain-circuit level with that in cognitive behaviors," said Brent Doiron, assistant professor of mathematics in Pitt's Kenneth P. Dietrich School of Arts and Sciences and the project's principal investigator. "It's a fact that short-term memory degrades over time. If you try to recall a stored memory, there likely will be errors, and these cognitive imperfections increase the longer that short-term memory is engaged."

Doiron explains that brain cells increase activity during short-term memory functions. But this activity randomly drifts over time as a result of stochastic (or chance) forces in the brain. This drifting is what Doiron's team is trying to better understand.

"As mathematicians, what we're really trying to do is relate the structure and dynamics of this stochastic variability of brain activity to the variability in cognitive performance," said Doiron. "Linking the variability at these two levels will give important clues about the neural mechanisms that support cognition."

Using a combination of statistical mechanics and nonlinear system theory, the Pitt team examined the responses of a model of a simplified memory network proposed to be operative in the prefrontal cortex. When sources of neural variability were distributed over the entire network, as opposed to only over subsections, the performance of the memory network was enhanced. This helped the Pitt team make the prediction published in PNAS, that brain wiring affects how neural networks contend with -- and ultimately express -- variability in memory and decision making.

Recently, experimental neurosciencists are getting a better understanding of how the brain is wired, and theories like those published in PNAS by Doiron's group give a context for their findings within a cognitive framework. The Doiron group plans to apply the general principle of linking brain circuitry to neural variability in a variety of sensory, motor, and memory/decision-making frameworks.

Two Pitt students participated in Dorion's research: Amber Polk (A&S '11) an undergraduate at the time the research took place and now a law student at the University of Illinois, and Ashok Litwin-Kumar, a neural computational PhD candidate with the Center for the Neural Basis of Cognition, a partnership of the University of Pittsburgh and Carnegie Mellon University.

Funding for this research was provided by the National Science Foundation and Sloan Foundations.

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The above story is reprinted from materials provided by University of Pittsburgh.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.

Journal Reference:

Amber Polk, Ashok Litwin-Kumar, and Brent Doiron. Correlated neural variability in persistent state networks. Proceedings of the National Academy of Sciences, April 2, 2012 DOI: 10.1073/pnas.1121274109

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

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Neural variability linked to short-term memory and decision making

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