An investigation of the gate control theory of pain using the experimental pain stimulus of potassium iontophoresis

This study investigated a prediction derived from gate control theory—that there would be a pulse of pain as a pain stimulus was being ramped off due to the rapidly transmitting, inhibitory large fiber activity falling away sooner at the spinal level than the excitatory activity of the slow-transmitting, small nociceptive afferents. A further prediction was that the more distant the peripheral stimulus was from the spine, the greater the pain pulse would be. Fourteen subjects had the pain stimulus of iontophoretically applied potassium ions (K⁺) applied to an upper and a lower site on the dominant arm. In a threshold detection task using the double random staircase method, subjects were asked to indicate whether they could detect a pulse of additional pain during this ramp-off phase. The average rate of stimulus ramp-off in order to detect a pain pulse was statistically greater for the upper-arm site (14.3 μg K⁺/sec) than for the lower-arm site (9.4 μg K⁺/sec). These results were consistent with gate control theory. Alternative explanations, including intrinsic differences in nociceptive responding for different dermatomes and anode break, were considered. It was concluded that the detection of a pain pulse during the ramping off of a peripheral pain stimulus potentially provides a quantitative measure of the spinal modulation of pain.     

Effects of optical pitch on oculomotor control and the perception of target elevation

In two experiments, we used an ISCAN infrared video system to examine the influence of a pitched visual array on gaze elevation and on judgments of visually perceived eye level. In Experiment 1, subjects attempted to direct their gaze to arelaxed or to ahorizontal orientation while they were seated in a room whose walls were pitched at various angles with respect to gravity. Gaze elevation was biased in the direction in which the room was pitched. In Experiment 2, subjects looked into a small box that was pitched at various angles while they attempted simply to direct their gaze alone, or to direct their gaze and place a visual target at their apparent horizon. Both gaze elevation and target settings varied systematically with the pitch orientation of the box. Our results suggest that under these conditions, an optostatic response, of which the subject is unaware, is responsible for the changes in both gaze elevation and judgments of target elevation.     

On Becoming A Counselor

Counselor education theory requires a broad-spectrum model that makes room for a wide diversity of orientations. This paper presents several broad-spectrum formulations about the nature of counselor behavior. Counselor behavior is described in terms of three elements (introgression, intervention, implementation), two simultaneous levels, and the principal domain of counseling. Together, these constructs become a theoretical framework with potential for facilitating cognitive communication between counselor educator and counselor trainee. The framework presented here is admittedly in tentative form. It is presented not solely for whatever inherent merit it may have but also to suggest how counselor education theory can help to give direction and meaning to the process of becoming a counselor.     

A new framework for the design of career interventions in organisations

There has often been an assumption that the school-to-work transition is fundamental for careers guidance and that mid-career interventions are supplementary. This approach can no longer be maintained. Frequent changes of job are now common. The relationships we have with employing organisations have become important and must become prominent in careers interventions. A model is presented to clarify what is needed. Two problems arise: the need to reconcile individual and organisational perspectives; and the need to look at careers in terms of life-career purpose as well as in terms of goals. It is recommended that individuals' plans mirror strategic management in the organisation. A number of ways are identified which extend the scope of career interventions.     

Children and Adults Use Gender and Age Stereotypes in Ownership Judgments

In everyday life, we are often faced with the problem of judging who owns an object. The current experiments show that children and adults base ownership judgments on group stereotypes, which relate kinds of people to kinds of objects. Moreover, the experiments show that reliance on stereotypes can override another means by which people make ownership judgments—inferring ownership from first possession. Experiment 1 replicates previous findings in showing that children and adults are strongly biased to assume that the first person to possess an object is its owner, while also demonstrating that the first-possession bias shows specificity to ownership. Experiment 2 shows that preschoolers and adults used gender stereotypes to make ownership judgments, and they do this even when stereotypes conflict with first possession. Experiment 3 reports similar findings but with age stereotypes. These findings reveal that stereotypes are a powerful means for making ownership judgments.     

From Ethics to Aesthetics: A Reconsideration of Buddhist Monastic Rules in the Light of Michel Foucault's Work on Ethics

This article considers the recent debate over the nature of Buddhist ethics largely conducted by scholars who have argued in different ways that Buddhist ethics may be assimilated to or may correspond with different forms of western ethical theory.

I argue that the interpretation of Buddhist texts, and in particular the Vinaya, in light of western ethical theory creates misunderstanding. I argue that in each case of a supposed ethical dilemma, Buddhist ethics should be seen as empirical, since the ultimate point of reference for the choices involved in a proposed action lies in the purity and wholesomeness of each individual action.

My approach follows Foucault's argument for scepticism with regard to the notions of a universal nature or of a universal rationality. I argue that it is not instructive to read Buddhist texts against generalized standards. Rather, it is more productive to regard ethics as creating a space for the ethical, not in a normative sense but one arising from personal practice as related to individual circumstances.

At the same time, this article outlines the role of beauty and its role in ethical formation. I suggest that one interpretation of Theravada Buddhism has regarded beauty as a form of sensuous pleasure, which is seen as a danger for someone on the spiritual path. However, an alternative reading of such texts is more sympathetic to the educative role of beauty.     

PREGNANCY: AN UNTHINKABLE REALITY

A therapist's pregnancy is bound to provoke profound conflicts in all patients, particularly those relating to envy, exclusion and loss as infantile aspects of the patient and their relation to the maternal object are revived. This paper explores the impact of the therapist's pregnancy on two patients for whom the experience was felt to be catastrophic. I suggest that in their early efforts to adapt to an inaccessible, disturbed and disturbing object who could not face reality or cope with life, these patients were compromised in their own ability to accept the facts of life and moreover to bear the frustration of exclusion, representing for them as it did, total inaccessibility. The pregnancy was so hated and distorted that it seemed to take on the meaning for them of a cruel ‘mad’ idea.     

Stacking fault and dislocation glide on the basal plane of graphite

Generalized stacking-fault energies for the basal plane of graphite are calculated from first principles for slip along two high-symmetry directions. The rhombohedral fault energy compares well with experiment and the anisotropy in behaviour is consistent with observed dislocation network geometry. Utilizing these calculated fault energies within a modified Peierls-Nabarro model, we estimate the barrier for basal dislocation motion based on lattice friction. This is found to be extremely small, from which we conclude that dislocation network interaction and pinning, rather than the Peierls barrier, must determine the practical shear strength of graphite. However, at low dislocation densities or over small crystallite regions, the shear strength should tend to this lower limit. We discuss the relevance of this to the mechanism of lubrication.     

Reviews

The Gulag Archipelago (Vols. 1 and 2) by Alexander Solzhenitsyn, Collins, 1974 and 1975, 600 pp. and 712 pp. £3.50 and £4.95.

Arkhipelag Gulag (Vols. 1, 2 and 3) YMCA Press, Paris, 1973, 1974 and 1976, 606 pp., 657 pp. and 581 pp. No price.

A Marxist Looks at Jesus by Milan Machovec, Darton Longman & Todd, 1976, 220 pp. £2.95.

White Book on Restrictions of Religion in the USSR by Michael Bourdeaux, Committee for the Defence of Human Rights in the USSR, Brussels, 1976, 66 pp., 65p.

Religious Liberty in the Soviet Union: WCC and USSR—A Post‐Nairobi Documentation edited by Michael Bourdeaux, Hans Hebly and Eugen Voss, Keston College (CSRC), 1976, 96 pp., £1.50.