EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Spectral estimation of temporal series at unequal intervals






Computers & Biomedical Research 19(3): 203-212

Spectral estimation of temporal series at unequal intervals

Many biological variables present rhythmic oscillations at different frequencies. Most common techniques, which statistically characterize temporal series and permit the study of these rhythms, require equidistant sampling. However, it is not always possible to register at regular intervals many of the variables under study, either because of the nature of the phenomenon which generates them or because of the difficulty in obtaining the samples. This paper proposes a method for spectral estimation by means of fitting to the cosine functions of sampled variables using a nonuniform point process.

Accession: 006459668

PMID: 3754801

DOI: 10.1016/0010-4809(86)90016-9

Download PDF Full Text: Spectral estimation of temporal series at unequal intervals



Related references

Engeli, M.; Halberg, F., 1964: Spectral analysis of steroid rhythms in data at equal or unequal intervals. FED PROC 23(2 Pt 1): 250

Grondin, S., 2010: Unequal Weber fractions for the categorization of brief temporal intervals. How constant is the Weber fraction (WF) for brief time intervals? This question was assessed in three experiments with two base durations (BDs), 0.2 and 1 sec, and with different ways of estimating the WF. In Experiment 1, the psychometric functio...

Bruce A.Bolt, 1978: Summary value smoothing of physical time series with unequal intervals. An algorithm SUMMOOTH for smoothing raw observations that are unequally spaced is explained. The process generalizes the method of summary values introduced into geophysics by H. Jeffreys. Smoothed data points, defined as the intersection of the l...

Gulland, J.A.; Holt, S.J., 1959: Estimation of growth parameters for data at unequal time intervals. ICES Journal of Marine Science 25(1): 47-49

Gaito, J., 1965: Unequal Intervals And Unequal N In Trend Analyses. Psychological Bulletin 63: 125-127

Johno, I.; Nakamura, T.; Kitazawa, S., 1988: An estimation of pharmacokinetic parameters for each dosing at unequal doses and dosing intervals. The calculations of pharmacokinetic parameters for each dosing at unequal doses and dosing intervals were proposed. Systemic clerance of a drug following one-compartment open model can be determined by the product of the apparent first-order elimi...

Allan L.G., 1983: Magnitude estimation of temporal intervals. Data are presented from a magnitude estimation study of temporal intervals. The individual [human] subject data do not support the lognormal model of error. Many of the response distributions are negatively skewed, and the variance of the log resp...

Carrasco, M.C.; Guillem, M.J.; Redolat, R., 2000: Estimation of short temporal intervals in Alzheimer's disease. This study investigated the estimation of short temporal intervals in Alzheimer's disease (AD). Eight patients with dementia of the Alzheimer type, and eight age-matched controls were evaluated in a time-estimation task. The task consisted in...

Hare, R.D., 1963: The estimation of short temporal intervals terminated by shock. Journal of Clinical Psychology 19: 378-380

Mering T.A.; Mukhin E.I., 1975: Effect of ablation of the temporal cortex on the estimation of time intervals. Soviet Neurology & Psychiatry 8(3): 66-76