Sentences with phrase «electrical changes in the cells»

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Also there is evidence of molecular mechanisms in the cell membranes that can amplify small changes in the field to produce large changes in neural activity.13 On the other hand, earlier tests of Kohler's theory found that interference with electrical gradients over the cortex had no effect on behavioral measures (see note 11 for reference to these studies).

Change has come fast in 50 years — from the mop to electrical gadgets, cell phones, ipods, computers, blackberries, and internet.

Prestin changes shape when exposed to high - frequency sound, and this in turn deforms the fine hair cells, setting off an electrical impulse to the brain.

It has been particularly difficult to measure changes in electrical functions of cells grown within Organ Chips that are normally electrically active, such as neuronal cells in the brain or beating heart cells, both during their differentiation and in response to drugs.

And in related experiments, he made tadpoles grow eyes on their stomachs by changing the electrical properties of cells to mimic those associated with eye formation.

Another component senses changes in the electrical current flowing through the generated sweat, which measures alcohol levels and sends them to the user's cell phone.»

The researchers then measured cell composition and electrical activity again and found that the cells dramatically changed when they were in contact with neurons from different regions.

In their study, Mazzolini and co-workers found that depending on the region of the cell being hit by the light, the electrical response of the nerve changes.

The scientists found that neurons lacking BAI1 show changes in long - term potentiation (LTP) and long - term depression (LTD): how the cells respond to patterns of incoming electrical signals.

For this proof of concept study, the scientists analyzed rodent cells» electrical activity for up to 30 days, reporting that the cells displayed characteristics and changes mimicking physiological responses described in literature.

They report this month in the Proceedings of the Royal Society B that changes in the heartbeat due to temperature (the heart slows as it cools and then speeds back up as the fish resurfaces) and adrenaline, released from the stress of diving, alter the electrical activity of the heart cells to sustain the constant calcium cycling needed to keep the heart going.

Cell - based biosensors measure changes in cell cultures via electrical signCell - based biosensors measure changes in cell cultures via electrical signcell cultures via electrical signals.

But a new study suggests that in the days and weeks that lead up to a brain forming in an embryo or fetus, altering the electrical properties of these cells can dramatically change how the ensuing brain develops.

«After a year of sound deprivation, we observed dramatic changes in the inner ear — notably, a significant loss of the synaptic connections through which the sensory cells send their electrical signals to the brain,» Dr. Maison said.

When these cells are illuminated by a strong light, a change in the structure of melanopsin triggers a molecular cascade that eventually leads to an influx of calcium ions into those neurons and an electrical pulse.

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Michael Levin at Tufts University in Medford, Massachusetts, and his colleagues have shown that after changing the electrical current of the cells once, the animals will continue to randomly regrow a head or a tail.

«They have a device that looks like a small tool box that contains neural cells and can detect changes in their electrical activity,» Stice said.

These interactions cause electrical changes in the taste cells which then send signals to the brain.

Year 4 Science Assessments Objectives covered: Recognise that living things can be grouped in a variety of ways Explore and use classification keys to help group, identify and name a variety of living things in their local and wider environment Recognise that environments can change and that this can sometimes pose dangers to living things Describe the simple functions of the basic parts of the digestive system in humans Identify the different types of teeth in humans and their simple functions Construct and interpret a variety of food chains, identifying producers, predators and prey Compare and group materials together, according to whether they are solids, liquids or gases Observe that some materials change state when they are heated or cooled, and measure or research the temperature at which this happens in degrees Celsius (°C) Identify the part played by evaporation and condensation in the water cycle and associate the rate of evaporation with temperature Identify how sounds are made, associating some of them with something vibrating Recognise that vibrations from sounds travel through a medium to the ear Find patterns between the pitch of a sound and features of the object that produced it Find patterns between the volume of a sound and the strength of the vibrations that produced it Recognise that sounds get fainter as the distance from the sound source increases Identify common appliances that run on electricity Construct a simple series electrical circuit, identifying and naming its basic parts, including cells, wires, bulbs, switches and buzzers Identify whether or not a lamp will light in a simple series circuit, based on whether or not the lamp is part of a complete loop with a battery Recognise that a switch opens and closes a circuit and associate this with whether or not a lamp lights in a simple series circuit Recognise some common conductors and insulators, and associate metals with being good conductors