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  • RESEARCH 4 BUSINESS 2016, Ljubljana, 5 and 6 of May 2016

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    Temporal resolution The resolution a particular brain imaging technique provides brand viagra (sildenafil citrate) regarding the temporal accuracy with which neural activity can be measured. Some techniques, such as ERPs, have better temporal resolution (<1 ms) than others, such as fMRI. Structured event complex Knowledge structures that contain two or more events and are extended in time from seconds to a lifetime and are the underlying representations for plans, procedures, scripts, stories, and similar stored knowledge. Time-resolved instruments Methods for optical imaging based on brand viagra (sildenafil citrate) light sources varying in intensity over time. Successive vigilance task An absolute judgment type of vigilance task in which current stimuli must be compared against information stored in working memory in order to detect critical signals.

    436 Glossary suprachiasmatic nucleus A discrete brain region lying within the hypothalamus and responsible for the generation of circadian rhythms in physiology and behavior.

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    Zisman DA, Kunkel brand viagra (sildenafil citrate) SL, Strieter RM, Tsai WC, Wilkowski J, Standiford TJ. 238. MCP-1 protects mice in lethal endotoxemia.

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    274–273. Koob, G. Cooper, Eds.), pp. Clarendon Press, Oxford. J.

    F., and Le Moal, M. (1997). Drug abuse.

  • Figure brand viagra (sildenafil citrate) 1-6. The whitish appearance of tracts is caused by the presence of the myelin sheath surrounding the axons. The gray and white matter can be distinguished in fixed tissue using anatomical methods and in the living brain using radiological methods.

    Regions of the central nervous system that contain axons have an unwieldy number of names, the most common of which is tract. In fresh tissue, nuclei and cortical areas appear grayish and tracts appear whitish, hence the familiar terms gray matter and white matter. Location of the central nervous system in the body.

    B.

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    PCR can recognize one malignant brand viagra (sildenafil citrate) cell in 105 normal cells if a specific molecular marker for the tumor cell is known. Molecular genetic methods such as PCR and FISH are intended as complements, not substitutes for, the classical cytogenetic methods. The analysis of protein (Western blot), RNA (Northern blot), and DNA (Southern blot) is not as sensitive as PCR but permits an approximate quantification. A new method known as fluorescence in situ hybridization (FISH) can also analyze nondividing interphase cells, allowing determination of the type of cell with a particular mutation or translocation.

    A disadvantage of FISH is that the currently available probes yield a rather high background. The fraction of malignant cells that can be recognized by Western, Northern, or Southern blot is in the range of 1–6%.

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    Similar to B, schematic diagram of an oligodendrocyte with processes brand viagra (sildenafil citrate) surrounding multiple axons. (Parts A and B, courtesy of Dr. Two oligodendrocytes from the subcortical white matter showing the fine processes connecting the cell bodies to the myelin sheaths surrounding several axons. Which is the gap between the myelin sheaths over adjacent segments of an axon, the node corresponds to the node of Ranvier.