Response probabilities and “same-different” reaction times

Fixation Probabilities and Times

Within a population, any allele must ultimately persist or be lost. If, sometime in the future, all members of the population are descendants of the allele, then that allele is said to have fixed within the population. If, sometime in the future, no members of the population are descendants of the allele, then that allele is said to have been lost. Using mathematical models, the probability of ...

The fructose-1,6-bisphosphate aldolases: same reaction, different enzymes.

Two forms of the enzyme fructoseI ,6-bisphosphate aldolase (EC 4. I .2.13) are known, designated class I and class 11. The enzymes o f class I function by imine formation between the substrate and a catalytically essential lysine residue in the active site, which acts to stabilize the intermediate carbanion (for review, see [ I , 21). The enzymes of class I1 utilize a divalent metal ion to act ...

Pollination and stigma wounding: same response, different signal?

In Petunia hybrida flowers, both pollination and stigma wounding induced a transient increase in ethylene pro­ duction and hastened corolla senescence. Ethylene production by different flower parts was measured in situ using laser photoacoustic (LPA) spectroscopy. In pollinated flowers, ethylene was exclusively produced by the stigma/style region whereas wounding of the stigma induced ethylene ...

Cumulative response probabilities: Estimating time course of lexical activation from single-point response times

An aim of research on spoken word recognition is to characterize the influence of various lexical characteristics (e.g., word frequency, neighborhood size) on lexical access. Dynamics can be coarsely estimated from single-point measures like naming or more directly assessed using time course measures like fixation proportions over time in the visual world paradigm (e.g., Tanenhaus et al., 1995)...

Response Latencies and Probabilities