Extraneous stimuli is an action or thought stemming from outside someone's focus and has no relevance to the person's current task. Those who suffer from Attention Deficit Hyperactivity Disorder (ADHD) are often plagued with distraction arising from extraneous stimuli and struggle to stay focused and often shift focus from one thing to another.
There are many symptoms to inattention on top of the distractions from extraneous stimuli, including the inability to sustain attention during tasks or play, forgetfulness, appearing to not be listening when spoken to and the inability to complete tasks, such as homework or chores, and not just because they are opposed to doing them. With hyperactivity, there are other symptoms including fidgeting, talking excessively, running around and climbing in situations where it is inappropriate and difficulty in playing quietly.
ADHD cannot be cured but it can be eased by adapting the environment or by schools making accommodations for children with problems. For example, a daily schedule that specifies what task should be performed at what time can help keep a person on track. A work space that limits distractions, such as cellphones, televisions, unproductive Internet browsing, too many people or loud music, can also be helpful.Learn More
The life cycle of the rabies virus is transmission, incubation, early symptoms (prodrome period) and encephalitis phase. Rabies is transmitted to a human or other animal through saliva from an infected animal, in which case transmission occurs from a bite or scratch. The final phases of rabies result in death.Full Answer >
Make an edible animal cell model using Jell-O and a variety of different candies such as M&M'S, gumdrops and gummy worms. A large Ziploc bag is required to set the Jell-O and is used to represent the cell's membrane.Full Answer >
The enthalpy of vaporization is the energy, in the form of heat, that a substance needs to change from a liquid to a gas at a constant temperature and pressure. Enthalpy of vaporization, designated as "delta H vap," is measured in kilojoules per mole of substance. The amount of heat needed to change 2.2 pounds of water into steam is 2,257 kilojoules, or 2,2257 kJ/mol.Full Answer >
French scientist Anselme Payen discovered the enzyme diastase in 1833. Payen, a chemist, later isolated diastase into its concentrated form. Diastase breaks down maltose, a starch, into dextrose, and the enzyme is commonly found in malt, barley and the human pancreas.Full Answer >