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Tag: "memories" at biology news

The secret lives of whales

...ncy sounds, and they must have remarkable acoustic memories just as we have visual memories,?says Clark. Clark concludes that he and other researchers have been thinking about whale herds at the wrong scales, which has been constrained by the limitations of their recording and visual observation abilities. “...

First real-time view of developing neurons reveals surprises, say Stanford researchers

...," Niell said. When people learn new skills or add memories to their overstuffed brains, new connections are required to retain that information. Some diseases also seem to be caused by brain connections not forming normally. Dyslexia, for example, may be caused by connections failing to form between certain...

Rats infected as newborns grew up vulnerable to memory problems during an immune challenge

..., a key memory area, disrupts the consolidation of memories following a learning experience. Thus it appears t...e immune challenges. Those changes affect how well memories are stored. The early alterationS may be to the basic architecture of glial cells called astrocytes ...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...nts of information, everything from early personal memories to one's personal notions of beauty. Then, this brain region (and related regions of the basal ganglia) helps to direct one's actions toward attaining one's goals. For neuroscientists," she said, "these findings about the diverse regional functions o...

Turning viruses into allies against cancer

...ost, the mere mention of the word "virus" stirs up memories of pain, fever and varying levels of suffering. But in recent years, scientists have been trying to turn these long-time medical foes into allies in the fight against cancer. Through genetic engineering, viruses are being re-programmed to take advan...

NHGRI targets 12 more organisms for genome sequencing

...hysiology or Medicine for his work elucidating how memories are formed in the human brain using Aplysia as a model. The disease-carrying insect, Rhodnius prolixus, spreads Chagas' disease, caused by the parasite Trypanosoma cruzi,which is carried by the insect. Chagas' disease is prominent in Latin America, ...

Could better mangrove habitats have spared lives in the 2004 tsunami?

... the event is nevertheless heavily burned into the memories of those who are directly involved. In the aftermath of the disaster, academics and politicians alike are trying to investigate how the number of casualties could have been reduced and, more important, how such severe damage can be avoided if a tsuna...

Stem Cells to Solve the Blood Shortage Problem?

... the event is nevertheless heavily burned into the memories of those who are directly involved. In the aftermath of the disaster, academics and politicians alike are trying to investigate how the number of casualties could have been reduced and, more important, how such severe damage can be avoided if a tsuna...

Study identifies gene in mice that may control risk-taking behavior in humans

...und they had an impaired ability to form emotional memories and conditioned fear. "Most of us are familiar ...e fact that we can remember things better if those memories are formed at a time when there is a strong emotional impact - times when we are frightened, angry o...

Scavenger cells could be key to treating HIV-related dementia

...actually may damage a part of the brain where many memories are stored in their attempt to attack the virus there, according to findings reported in the Journal of Virology this month. Researchers found that HIV-infected macrophages in the brain continuously travel to the temporal lobe, a part of the brain A...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

... that we make temporal discriminations relative to memories of previous durations. Such features have made the machinery of interval timing more elusive, and some even questioned whether an internal clock of this sort even exists." In the 1980s Meck and his colleagues at Brown and Columbia Universities propo...

Researchers know what you were about to say; fMRI used to detect memory storage and retrieval

...faces. "This study shows that, as you search for memories of a particular event, your brain state progressiv...ation. "An every-day strategy for getting at lost memories involves using a part of a memory to pull out the entire thought, much like when you try remember wh...

'Sharp' older brains are not the same as younger brains

...e that still "sharp" older brains store and encode memories differently than younger brains. This discovery ...hose synaptic communications, the older rats whose memories remained sharp still had that capacity. Interestingly enough, the successful older rats also relied ...

What can change in the brain? Electrical synapses, research shows

... the cerebral cortex, where it is transformed into memories and emotions, speech and movement. The thalamic reticular nucleus' role as a sort of switch, starting or stopping the flow of sensory stimuli to the cortex, may implicate it as a major player in the regulation of sleep and wakefulness, the researche...

Tracking the memory trace

...n the same place. "It's not as if we are forming memories that are then being written to a "hard disk" area of the brain, and it's there and recalled from the same location at any time after learning," said Davis. "We now think that different areas of the brain have dominion over small intervals of time aft...

Activation of a protein solidifies fear memory in the brain

...in the brain enhances long-term storage of fearful memories and strengthens previously established fearful mem...ric disorders." She said recent data suggest that memories can continue to be changed or eliminated long after they have been formed, or consolidated. Based on...

How 'hot' emotional brain interferes with 'cool' processing

... new drugs to alleviate, for example, the haunting memories of PTSD sufferers will be aided by the fMRI technique the researchers developed to precisely measure this distraction, they said. The researchers, Florin Dolcos and Gregory McCarthy, published their findings in the Feb. 15, 2006, issue of the Journa...

Cloned stem cells prove identical to fertilized stem cells

... words, the egg needs to erase all tissue-specific memories from the skin cell and revert it into a genomic blank slate. But this entire process is almost never perfect, and nearly all cells in a cloned blastocyst retain some memory of their original source. As a result, the developing fetus inevitably has ...

Neuroscientists discover new cell type that may help brain maintain memories of smells

...usual properties which may help the brain maintain memories of smells and also opens a new approach to underst...tical to the machinery that enables other types of memories in the cortical brain region most susceptible to damage in this debilitating disease. "By underst...

Zebra finches remember songs dad sang

...ted a place in the brain where songbirds store the memories of their parents' songs. The discovery has implica...ird's brain provides a laboratory for studying how memories that underlie vocal learning are stored in the brain and how the stored memories are used to guide t...

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