Sentences with phrase «place cells fire»

Direction cells fire when an animal is facing a particular direction, place cells fire only in a specific location, and grid cells fire at regular intervals as an animal moves around.

The rat's previous experience affected how its place cells fired.

Not exact matches

The explosion was reportedly triggered by the Hasidic Jews placing cell phones in the fire as a symbolic rejection of the secular world.

Here, «place cells» fire in different patterns and combinations to help map routes while a rat explores.

When both mice and people navigate, specialised «place» cells in the brain's hippocampus fire.

Christof Koch, a neuroscientist at Caltech, and Itzhak Fried, a neurosurgeon at the University of California at Los Angeles, revealed this spring that their research team had discovered individual brain cells that fire in response to particular people and places.

The scientists identified «place cells» that fired when the rats moved to different spots along the track.

In the variable cue - constant place condition, the firing rates of active cells varied, often over more than an order of magnitude, whereas the location of firing remained constant.

In the 1970s, neuroscientist John O'Keefe, now at University College London, discovered neurons called place cells, which fire whenever a rat enters a specific location.

How the speed cells behaved didn't depend on what the rats» environment looked like; for instance, placing them in a new box with different markings didn't change the firing pattern.

Electrical recordings of signals transmitted from the hippocampus suggested that the animals had developed place cells — cells that are believed to convey a sense of location — and that these cells were firing when an animal passed through a familiar place.

Davidson noticed something intriguing: Sometimes during these breaks the place cells became active again, firing in the same order (but at 20 times the speed) as they did when the rats were navigating the track.

When the rat travels that route again, the same «place cells» fire in the same order.

The researchers were able to identify place cells that fired at different spots all along the way.

These cells fire only when an animal is in a particular place — close to an exercise wheel, for example, or in front of a door.

Whereas place cells in a rat brain may change their firing rates if their environment is altered even a little — for example by changing the colour of the walls — those of grid cells remain robustly unchanged.

John O'Keefe discovered that certain cells in a region of the brain called the hippocampus preferentially fired, or were activated, when an animal was in a particular environmental location — the first description of «place cells».

«We call these anxiety cells because they only fire when the animals are in places that are innately frightening to them,» said Rene Hen, PhD, a professor of psychiatry at CUIMC and one of the study's senior investigators.

The channel - like property could have evolved, says Edwards, to meet the important need of moving large amounts of glutamate quickly, for while the other neurotransmitters are involved in modulating behaviors, such as mood, and therefore don't need to act with millisecond speed, glutamate functions by rapid - fire communication between closely placed nerve cells, and could require the fast action of the channel mechanism.

He is blindfolded and led, by motorcycle to some abandoned warehouse, where he is kept in a filthy concrete cell, questioned daily, beaten at times, and once even placed before a firing squad who shot bullets all around him where Issac was so terrified, he defecated in his pants.

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One big open bedroom with fire place, queen bed, closet, one small bedroom with double bed, closet, cable TV, DVD, Stereo System, VCR, cell phone, internet access, fully equipped kitchen with cooking pots and pans, BBQ grill, washing machine, bicycle.

Introduce yourself to the neighbors, check for cell phone reception, notice any animals around, look around the house for possible hiding places for criminals, and visit the local police and fire substations and tell them you'll have refreshments if they should stop by, he advised.