background and aim: auditory p300 is an event-related potential. cognitive factors like attention are involved in the generation of p300. it seems that normative variation of p300 is necessary for clinical purposes. thus, the current study was designed to establish preliminary normative variation of p300 amplitude and latency at fz and cz sites in adults. methods: this cross-sectional study was...

background: h-reflex is a valuable electrophysiological technique for assessing nerve conduction through entire length of afferent and efferent pathways, especially nerve roots and proximal segments of peripheral nerves. the aim of this study was to investigate the relation between normal values of flexor carpi radialis (fcr) h-reflex latency, upper limb length and age in normal subjects, and t...

background:  optical coherence tomography (oct) is a non-invasive instrument, which can be used to estimate the thickness of the retinal nerve fibre layer (rnfl) and provides an indirect measurement of axonal destruction in multiple sclerosis (ms). the main aim of this study was to find out any correlations between p100 latency in visual evoked potential (vep) and rnfl thickness. methods: the p...

In this paper we review the traversal algorithms for kd-trees for ray tracing. Ordinary traversal algorithms such as sequential, recursive, and those with neighbor-links have different limitations, which led to several new developments within the last decade. We describe algorithms exploiting ray coherence and algorithms designed with specific hardware architecture limitations such as memory la...

The e ectiveness of large scale computing depends to a great extent on the performance of the memory system. As shared memorymultiprocessors grow in size, their memory hierarchy deepens, resulting in a design with non-uniform latencies. In this paper, we explore the implications of multi-valued memory latencies. In particular, we study the e ect of a nonuniform tra c distribution on a hierarchi...

Linux is not well suited for real-time environment. Redesigning it for real-time systems, however, is a very complex and challenging task. In this paper, we suggest an approach to convert a large system like Linux into a real-time system with minimal changes. We observe that most of real-time systems demand real-time performance only for a couple of devices they are targeting for. Our approach ...

This paper presents a fast and eeective linear intraprocedu-ral register allocation strategy that optimizes register usage across procedure calls. It capitalizes on our observation that while procedures that do not contain calls (syntactic leaf routines) account for under one third of all procedure activations , procedures that actually make no calls (eeective leaf routines) account for over tw...

OBJECTIVE To examine the effects of aging and age-related hearing loss on the perception and neural representation of a time-varying speech cue. METHODS P1, N1 and P2 cortical responses were recorded from younger and older normal-hearing adults, as well as older adults with age-related hearing loss. Synthetic speech tokens representing 10 ms increments along a /ba/-/pa/ voice-onset-time (VOT)...