๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Highway of dreams: A critical view along the information superhighway

โœ Scribed by Case, Donald O.

Book ID
111697447
Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
24 KB
Volume
49
Category
Article
ISSN
0002-8231

No coin nor oath required. For personal study only.

๐Ÿ“œ SIMILAR VOLUMES

Highly-charged organic nanoparticles: re
Highly-charged organic nanoparticles: redox-active dendrimers incorporating 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene unitsMolecular Saddles Part 8: For part 7 of this series see: C. A. Christensen, A. S. Batsanov, M. R. Bryce and J. A. K. Howard, J. Org. Chem., 2001, 66, 3313.Electronic supplementary information (ESI) available: molecular models of 10 and 1012+ viewed along the plane of the benzene core (Fig. S1) and 18 and 1824+ viewed perpendicular to the plane of the benzene core (Fig. S2). See http://www.rsc.org/suppdata/jm/b1/b106010b/
๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Royal Society of Chemistry ๐ŸŒ English โš– 568 KB
Theta bandwidth determines human visual
Theta bandwidth determines human visual working memory capacity Human visual short term memory (VSTM) is capacity limited1. The neurophysiological basis for this limitation is, however, currently unknown. Here we apply the principle of efficient information transfer, derived from communications theory, to provide a mechanistic account of VSTM capacity. Shannon's information theory states that to increase the capacity of information encoded along a frequency axis, it is more efficient to expand the bandwidth than to increase the transmitted power for a given level of noise2. By applying Shannon's principles to human magnetoencephalography (MEG) recordings of oscillatory activity in the theta band during a VSTM task, we demonstrate that increasing memory load to capacity induces a parametric shift in theta frequency band during the delay period, from 4 to 8 Hz, in a right fronto-parietal network. Critically, we show that an individual's VSTM capacity is proportional to that parametric shift. Thus, the adherence of cortical neuronal oscillations to a fundamental principle of efficient information transfer appears to underlie the limited nature of visual representation in short-term memory.
โœ Moran, R.J.; Strange, B.A.; Campo, P.; Dolan, R.J. ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 142 KB