Activation et deactivation.

Abstract

The president of Canadian psychology discusses its history and makes optimistic predictions on its future. He would like to see all Canadian psychologists working together, despite all the factors of ethnic differences, geographic location, and theoretical and methodological orientation which have tended to divide them. He goes on to describe past, current and future research topics.

Comportements d'immobilité et variations cardiaques chez des rats soumis ou non à "l'immersion" (blocage de la réponse d'évitement).

“…La deceleration apparaissant au moins trois secondes avant que l'animal ne s'immobilise ne saurait etre le sous-produit direct de la cessation de l'activite et refleter un simple ajustement homeostatique. Elle s'assimilerait plutot a une reponse conditionnelle protectrice (Schneiderman et al, 1974) ou au resultat d'un mecanisme de deactivation (Belanger, 1968) en vue de diminuer 1'impact des stimuli. Le parallelisme entre le ralentissement du rythme cardiaque et l'apparition ulterieure de l'immobilite appuie un modele d'interaction cardiosomatique (Obrist, Howard, Lawler, Galosy, Meyers, & Gaebelein, 1974) ou de memes mecanismes centraux regissent en parallele activites cardiaque et somatique.…”

Relations of heart rate level to motor activity and food deprivation in the rat.

“…The present experiment attempts to examine this possibility with regard to the heart rate level and hours of deprivation relation described by Belanger and Feldman (1962) and others. Reviews of experiments concerned with heart rate and deprivation can be found in Appley (1970), Belanger (1967), Rlevings (1971), Campbell and Misanin (1969), and Malmo and Belanger (1967.The present study examines activity levels and behaviour patterns (grooming and rearing) for the influences on heart rate suggested by Vanderwolf and Vanderwart (1970). In addition, an attempt is made to assess the role of activity in reinforcement-related phasic heart rate patterns of the type obtained by Ehrlich and Malmo (1967).…”

“…The present experiment attempts to examine this possibility with regard to the heart rate level and hours of deprivation relation described by Belanger and Feldman (1962) and others. Reviews of experiments concerned with heart rate and deprivation can be found in Appley (1970), Belanger (1967), Rlevings (1971), Campbell and Misanin (1969), and Malmo and Belanger (1967.…”