...Michael A. Keane; Jack E. James; Michael J. Hogan Background/Aims: Despite several decades of research into the effects of caffeine on EEG, few consistent findings have emerged. Notwithstanding the likelihood that differences in methodology may explain some of the inconsistency, confidence...

...A.P. Smith; J.M. Rusted; P. Eaton-Williams; M. Savory; P. Leathwood Previous research has shown that caffeine increases alertness and improves sustained attention. In contrast to this, consumption of lunch leads to a decline in the ability to maintain attention. The main aim of the present study...

... from any ideas, methods, instructions or products referred to in the content or advertisements. Caffeine Caffeine withdrawal Psychomotor performance Biological Psychology /Pharmacopsychology Short Communication Neuropsychobiology 1994;30:124-125 Jack E. James School of Behavioural Health...

...Uma Gupta; G.P. Dubey; B.S. Gupta The present study examined the effects of caffeine on the estimation of felt width of blocks employing haptic presentation. Following a between-subject design, 160 male postgraduate students classified as high or low impulsives received either placebo or one...

... from any ideas, methods, instructions or products referred to in the content or advertisements. Caffeine Caffeine withdrawal Psychomotor peformance Andrew P. Smith Health Psychology Research Unit. Department of Psychology, University of Bristol, UK Biological Psychology/Pharmacopsychology...

...Peter J. Rogers; Nicola J. Richardson; Claire Dernoncourt We agree with the conclusions of a recent article in this journal [James, Neuropsychobiology l994;30:124–125] that studies on the psychoactive effects of caffeine need to take into account the possibility that the results obtained might...

...A.P. Smith; A.M. Kendrick; A.L. Maben The aim of the present study was to examine the effects of breakfast and caffeine on performance, mood and cardiovascular functioning in the late morning and after lunch. Forty-eight subjects were tested at 07.45 and subjects then assigned to one of the four...

...A.P. Smith; P. Brockman; R. Flynn; A. Maben; M. Thomas An experiment was carried out to examine the effects of coffee on performance and alertness in the day and at night. The results showed that caffeinated coffee had a beneficial effect on alertness and improved performance on a variety of tasks...

... play a key role in the generation of epilepsies and possibly also in the development of these psychiatric disorders the effects of CBZ on epileptic discharges (elicited by caffeine, penicillin and low Mg 2+ ) in CA3 neurons of hippocampal slices were compared with those of the organic calcium...

...K. Bättig; R. Buzzi A continuously subject-paced and monetarily reinforced information-processing task was used to test whether caffeine might stimulate performance beyond the ceiling imposed by fatigue. A 3 × 2 design was adopted with the three doses 0, 150, and 450 mg caffeine...

...Conrad M. Swartz; Kevin Breen; Victor S. Wahby In expectation of improving sensitivity, the standard 1-mg dexamethasone suppression test (DST) was given to 10 depressed inpatients and repeated with theophylline or caffeine and again following 3 days of lorazepam with abrupt discontinuation. Two...

...Thomas-Frank Münte; Hans-Jochen Heinze; Helmut Künkel; Michael Scholz The time course of the effects of caffeine (200 mg), diazepam (8 mg) and placebo on CNV magnitude, reaction time and state of mood was investigated in normal volunteers using a double-foreperiod paradigm. CNV changes were...

...Jack E. James; M. Elizabeth Gregg; Marian Kane; Frances Harte This study aimed to determine whether sustained (i.e. dietary) use of caffeine has net effects on performance and mood compared with sustained abstinence, and whether dietary caffeine restores performance and mood adversely affected...

...Martin Siepmann; Wilhelm Kirch Despite the widespread use of caffeine as a central nervous stimulant, the central pharmacodynamic properties of the drug have not yet been conclusively evaluated in humans. The present study was undertaken to assess the acute effects of caffeine on measures...

...Reiji Yoshimura; Nobuhisa Ueda; Jun Nakamura; Seiji Eto; Masakazu Matsushita We examined the relationships between plasma fluvoxamine concentrations and plasma levels of cotinine and caffeine, respectively, under steady-state conditions in 30 patients who met DSM-IV criteria for a major depressive...

...Jack E. James Despite being the most widely consumed psychoactive substance in the world, there is considerable confusion regarding the effects of caffeine. This study examined objective indices of performance, and self-reported mood, headache, and sleep in 36 healthy male and female habitual...