منابع مشابه
Symbols and quantities in parietal cortex: elements of a mathematical theory of number representation and manipulation
In this chapter, I put together the first elements of a mathematical theory relating neurobiological observations to psychological laws in the domain of numerical cognition. The starting point is the postulate of a neuronal code whereby numerosity—the cardinal of a set of objects—is represented approximately by the firing of a population of numerosity detectors. Each of these neurons fires to a...
متن کاملSymbols, SI Units and Physical Quantities within the Scope of Sap Flow Studies
Some confusion was observed during the 7 International Workshop on Sap Flow (Seville, Spain, 21-24 October 2008) with respect to the use of symbols, units and physical quantities in presentations and during discussions. It was therefore decided at the end of the workshop that a technical note would be very useful with the aim to summarize the basics of the “Système International des Unités (SI)...
متن کاملSymbolic estrangement: evidence against a strong association between numerical symbols and the quantities they represent.
Are numerals estranged from a sense of the actual quantities they represent? We demonstrate that, irrespective of numerical size or distance, direct comparison of the relative quantities represented by symbolic and nonsymbolic formats leads to performance markedly worse than when comparing 2 nonsymbolic quantities (Experiment 1). Experiment 2 shows that this effect cannot be attributed to diffe...
متن کاملEvidence against a strong association between numerical symbols and the quantities they represent
Are numerals divorced from a sense of the actual quantities they represent? We show that accessing a sense of how much a numerical symbol actually represents is a surprisingly difficult and non-trivial process. Irrespective of numerical size or distance, direct comparison of the relative quantities represented by symbolic and non-symbolic quantities leads to performance markedly worse than when...
متن کاملEstimating kinetic parameters from dynamic contrast-enhanced T(1)-weighted MRI of a diffusable tracer: standardized quantities and symbols.
We describe a standard set of quantity names and symbols related to the estimation of kinetic parameters from dynamic contrast-enhanced T(1)-weighted magnetic resonance imaging data, using diffusable agents such as gadopentetate dimeglumine (Gd-DTPA). These include a) the volume transfer constant K(trans) (min(-1)); b) the volume of extravascular extracellular space (EES) per unit volume of tis...
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ژورنال
عنوان ژورنال: JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
سال: 1930
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1917.14.4_235