Probing categorical moderation under variance heterogeneity.

2020 ◽  
Author(s):  
Gwowen Shieh
Keyword(s):  
Variance Heterogeneity

Statistical Considerations When Assessing Short Latency Stretch Reflexes in the Human Soleus Muscle

Motor Control ◽  
2015 ◽  
Vol 19 (4) ◽  
pp. 253-270 ◽  
Author(s):  
Asger Roer Pedersen ◽  
Peter William Stubbs ◽  
Jørgen Feldbæk Nielsen
Keyword(s):  
Ankle Joint ◽  
Soleus Muscle ◽  
Stretch Reflex ◽  
Short Latency ◽  
Response Magnitude ◽  
Variance Heterogeneity ◽  
Stretch Reflexes ◽  
Response Characteristics ◽  
Normally Distributed

The aim was to investigate trial-by-trial response characteristics in the short-latency stretch reflex (SSR). Fourteen dorsiflexion stretches were applied to the ankle joint with a precontracted soleus muscle on 2 days. The magnitude and variability of trial-by-trial responses of the SSR were assessed. The SSR was log-normally distributed and variance heterogeneous between subjects. For some subjects, the magnitude and variance differed between days and stretches. As velocity increased, variance heterogeneity tended to decrease and response magnitude increased. The current study demonstrates the need to assess trial-by-trial response characteristics and not averaged curves. Moreover, it provides an analysis of SSR characteristics accounting for log-normally distributed and variance heterogeneous trial-by-trial responses.

scholarly journals Variance heterogeneity genome‐wide mapping for cadmium in bread wheat reveals novel genomic loci and epistatic interactions

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Waseem Hussain ◽  
Malachy T. Campbell ◽  
Diego Jarquin ◽  
Harkamal Walia ◽  
Gota Morota
Keyword(s):  
Bread Wheat ◽  
Variance Heterogeneity ◽  
Epistatic Interactions ◽  
Genome Wide

Variance Heterogeneity

1988 ◽  
Vol 56 (4) ◽  
pp. 193-197 ◽  
Author(s):  
Stephen F. Olejnik
Keyword(s):  
Variance Heterogeneity
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