Computer analysis of EEG data for a normative library Final report, Sep. 24, 1963 - Jan. 31, 1966

Computer analysis of electroencephalographic data for development of normative criteri

Comprehensive Spectral Analysis of Human EEG GENERATORS in Posterior Cerebral Regions

Human electroencephalogram generator spectral analysis in posterior cerebral region

Results of electroencephalographic examina- tions under the influence of vibration and centrifuging in the monkey

Electroencephalographic examinations of monkeys under influence of vibrations and centrifugin

Analysis of baseline and Gemini flight GT-7 EEG data with specification of on-line computing requirements

Analysis of baseline and Gemini GT-7 ELECTROENCEPHALOGRAM data with specification of on-line computing requirement

Effect of low-level, low-frequency electric fields on EEG and behavior in Macaca nemestrina

Effect of low level, low frequency electric fields on EEG and behavior of Macaca nemestrin

Electroencephalographic baselines in astronaut candidates estimated by computation and pattern recognition techniques

Electroencephalographic baselines in astronaut candidates estimated by computer and pattern recognition technique

The hard quiescent spectrum of the neutron-star X-ray transient EXO 1745-248 in the globular cluster Terzan 5

We present a Chandra observation of the globular cluster Terzan 5 during times when the neutron-star X-ray transient EXO 1745-248 located in this cluster was in its quiescent state. We detected the quiescent system with a (0.5-10 keV) luminosity of ~2 x 10^{33} ergs/s. This is similar to several other neutron-star transients observed in their quiescent states. However, the quiescent X-ray spectrum of EXO 1745--48 was dominated by a hard power-law component instead of the soft component that usually dominates the quiescent emission of other neutron-star X-ray transients. This soft component could not conclusively be detected in EXO 1745-248 and we conclude that it contributed at most 10% of the quiescent flux in the energy range 0.5-10 keV. EXO 1745-248 is only the second neutron-star transient whose quiescent spectrum is dominated by the hard component (SAX J1808.4-3658 is the other one). We discuss possible explanations for this unusual behavior of EXO 1745-248, its relationship to other quiescent neutron-star systems, and the impact of our results on understanding quiescent X-ray binaries. We also discuss the implications of our results on the way the low-luminosity X-ray sources in globular clusters are classified.Comment: Accepted by ApJ Main Journal, September 22, 2004. Figure 2 is a color figur

Mutualism or Parasitism? Using a Phylogenetic Approach to Characterize the Oxpecker-Ungulate Relationship

With their striking predilection for perching on African ungulates and eating their ticks, yellow-billed (Buphagus africanus) and red-billed oxpeckers (B. erythrorhynchus) represent one of the few potentially mutualistic relationships among vertebrates. The nature of the oxpecker–ungulate relationship remains uncertain, however, because oxpeckers are known to consume ungulate tissues, suggesting that the relationship between oxpeckers and ungulates may also be parasitic. To examine this issue further, we obtained data on oxpecker preferences for different ungulate species, the abundance of ticks on these ungulates, and ungulate hide thickness. In support of the mutualism hypothesis, we found that both species of oxpeckers prefer ungulate hosts that harbor a higher abundance of ticks. We found no evidence that hide thickness—a measure of the potential for parasitism by oxpeckers—predicts oxpecker preferences for different ungulate species. Oxpeckers also prefer larger-bodied ungulates, possibly because larger animals have more ticks, provide a more stable platform upon which to forage, or support more oxpeckers feeding simultaneously. However, the preference for ungulates with greater tick abundance was independent of host body mass. These results support the hypothesis that the relationship between oxpeckers and ungulates is primarily mutualistic.Human Evolutionary Biolog

Analysis of Brain Wave Records from Gemini Flight GT-7 by Computations to Be Used in a Thirty Day Primate Flight

Data analysis and display techniques for biosatellite flight and application of astronaut electroencephalogram analysi