Dear Alice, I have been taking OTC cough/cold/flu preps for about a week. These all contain acetaminophen with the subsequent warnings against using if one imbibes due to possible liver damage. Is there a period of time I should wait (I'm better now) after I stop using the OTCs before I can resume enjoying my "more than 3 alcoholic beverages" per day to allow the acetaminophen to metabolize? Re...

Dear Alice, I have been taking OTC cough/cold/flu preps for about a week. These all contain acetaminophen with the subsequent warnings against using if one imbibes due to possible liver damage. Is there a period of time I should wait (I'm better now) after I stop using the OTCs before I can resume enjoying my "more than 3 alcoholic beverages" per day to allow the acetaminophen to metabolize? Re...

Dear Alice, I have been taking OTC cough/cold/flu preps for about a week. These all contain acetaminophen with the subsequent warnings against using if one imbibes due to possible liver damage. Is there a period of time I should wait (I'm better now) after I stop using the OTCs before I can resume enjoying my "more than 3 alcoholic beverages" per day to allow the acetaminophen to metabolize? Re...

Hyper chaos is the non-periodic behaviour of deterministic nonlinear dynamical system that is highly sensitive to initial conditions with more than one positive Lypunov Exponents, i.e., its dynamics expand not only small line segments, but also small area elements, these giving rise to a ‘thick’ chaotic attractor. Bifurcation effects include the period doubling route to chaos, the intermittency...

Although dual-task interference is ubiquitous in a variety of task domains, stop-signal studies suggest that response inhibition is not subject to such interference. Nevertheless, no study has directly examined stop-signal performance in a dual-task setting. In two experiments, stop-signal performance was examined in a psychological refractory period task, in which subjects inhibited one respon...

The standard bottleneck model of the psychological refractory period (PRP) assumes that the selection of the second response is postponed until the first response has been selected. Accordingly, dual-task interference is attributed to a single central-processing bottleneck involving decision and response selection, but not the execution of the response itself. In order to critically examine the...

We generalize the classical Cayley-Dickson doubling process starting with a quaternion algebra over a field F by allowing the scalar in the doubling to be an invertible element in the algebra. We investigate the resulting eight-dimensional algebras over F and show that they are division algebras for all scalars chosen in D outside of the base field F , if D is a division algebra.

The hypothesis that episodic memory retrieval can occur in parallel with other cognitive processes was tested in 2 experiments. Participants memorized words and then performed speeded cued recall (Experiment 1) or speeded yes-no recognition (Experiment 2) in a dual-task situation. The psychological refractory period design was used: The participant was presented with a single test item at vario...

The Dimension Action (DA) model asserts that the visual system is modular, and that each task involves multiple-response mechanisms rather than a unitary-response selection mechanism. The model has been supported by evidence from single-task interference paradigms. We use the psychological refractory period paradigm and show that dual-task performance can also be explained by the DA model. In 6...