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Reconsolidation: Behavioural and Electrophysiological Sequelae of Context and Stress in Human Episodic Memory

von Dr. Jennifer L. Moore

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[1.] Jm/Fragment 067 01 - Diskussion
Zuletzt bearbeitet: 2014-01-12 21:16:18 Graf Isolan
Fragment, Gesichtet, Jm, KomplettPlagiat, SMWFragment, Scanlon et al 2006, Schutzlevel sysop

Typus
KomplettPlagiat
Bearbeiter
Hindemith
Gesichtet
Yes.png
Untersuchte Arbeit:
Seite: 67, Zeilen: 1-13
Quelle: Scanlon et al 2006
Seite(n): 5, Zeilen: 2nd col: 41ff; 3rd col: 1ff
Neural Current Sources originate at the cell membrane and represent a deviation from the equilibrium state or resting potential. During an EPSP, a local current sink is produced, which draws positive ions into the cell, thereby moving the potential closer to 0 mV. A sink may be thought of as a negative source. Local sinks are balanced by distant passive sources; as the sink draws ions into the cell, thus depolarising the membrane, these ions move through the neuron and are ejected at some other location, known as a (positive) source. For example, if a sink existed at a branch of the cell’s dentritic tree, the distant source might occur at the cell body, or near the axon hillock. The co-occurrence of the positive source at one location, and the negative sink at another, means that the cell may effectively be viewed as a dipole. In an IPSP, the opposite situation occurs. A local source is produced, which emits positive ions, thereby lowering the membrane potential. This source is balanced by a distant sink, which takes in ions at another location on the cell. Again, this may be considered as a dipole. The EEG gives a macroscopic view of the activity of these sinks and sources. Neural Current Sources originate at the cell membrane and represent a deviation from the equilibrium state or resting potential. During an EPSP, a local current sink is produced, which sucks positive ions into the cell, thereby moving the potential closer to 0 mV. A sink may be thought of as a negative source. Local sinks are balanced by distant passive sources; as the sink draws ions into the cell, thus depolarising the membrane, these ions move through the neuron and are ejected at some other location, known as a (positive) source. For example, if a sink existed at a branch of the cell’s dentritic tree, the distant source might occur at the cell body, or near the axon hillock. The co-occurrence of the positive source at one location and the negative sink at another means that the cell may effectively be viewed as a dipole.

In an IPSP, the opposite situation occurs. A local source is produced, which emits positive ions, thereby lowering the membrane potential. This source is balanced by a distant sink, which takes in ions at another location on the cell. Again, this may be considered as a dipole. The EEG gives a macroscopic view of the activity of these sinks and sources.

Anmerkungen

A reference to the source is missing.

Sichter
(Hindemith) Agrippina1


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