Reflections on human Pavlovian decelerative heart-rate conditioning with negative tilt as US: alternative approaches

Pavlovian George Windholz (1931-2002): an exemplar of scholarly "observation and observation" and a critical contributor to psychology, and hence to behavioral neuroscience

Although most members of the Pavlovian Society properly focus their efforts on empirical research, the scholarly, critical conceptual contributions of some individuals are also relevant to progress in psychology and behavioral neuroscience. This paper discusses the contributions of the late George Windholz (often in collaboration with Peter Lamal) as: (a) a historian of Pavlov's life and work; (b) an analyst of priority issues in psychology as a science; (c) a refuter of myths perpetrated by psychology texts. These contributions provide an example of the scholarly form of the motto "observation and observation," where the data used to test hypotheses comprise original documents (often in languages other than English) examined by the historian's critical eye.

Pavlov's methodological behaviorism as a pre-Socratic contribution of the melding of the differential and experimental psychology

The differential/experimental distinction that Cronbach specified is important because any adequate account of psychological phenomena requires the recognition of the validity of both approaches, and a meaningful melding of the two. This paper suggests that Pavlov's work in psychology, based on earlier traditions of inquiry that can be traced back to the pre-Socratics, provides a potential way of achieving this melding, although such features as systematic rather than anecdotal methods of observation need to be added. Pavlov's methodological behaviorist approach is contrasted with metaphysical behaviorism (as exemplified explicitly in Watson and Skinner, and implicitly in the computer-metaphorical, information-processing explanations employed by current "cognitive" psychology). A common feature of the metaphysical approach is that individual-differences variables like sex are essentially ignored, or relegated to ideological categories such as the treatment of sex as merely a "social construction." Examples of research both before and after the "cognitive revolution" are presented where experimental and differential methods are melded, and individual differences are treated as phenomena worthy of investigation rather than as nuisance factors that merely add to experimental error.

Effects of CS-US Interval on Unconditioned Response Diminution in Human Heart Rate Classical Conditioning

Abstract This experiment studies the role of the conditioned response (CR) in explaining the unconditioned response (UR) diminution phenomenon in heart rate (HR) classical conditioning. In order to analyze the implication of the different CR components on UR diminution, the interstimulus interval (ISI) was varied. Sixty volunteer subjects received discrimination training with an interval between conditioned stimulus (CS) and unconditioned stimulus (US; aversive white noise) of 8 s. After the discrimination training phase, subjects were randomized into three different groups according to an ISI of 1, 5, or 8 s. The subjects of each group were then tested with five presentations of CS+/US. The results showed that UR amplitude as well as the deceleration immediately before this response (pre-UR deceleration) were significantly lower in the 5 s and 8 s ISI groups than in the 1 s ISI group. In addition, UR amplitude and pre-UR deceleration were statistically the same in the 5 s and 8 s ISI groups. These findings are discussed in terms of the adaptative role of the CR in classical conditioning.

Relation between conditioned stimulus-elicit responses and unconditioned response diminution in long-interval human heart-rate classical conditioning

Previous research on electrodermal conditioning suggests that the conditioned diminution of the unconditioned response (UR) has an associative basis. The aim of this experiment was to test whether this phenomenon also occurs in heart rate (HR) classical conditioning. For this purpose, a differential classical conditioning was performed. The conditioned stimuli (CSs) were geometrical shapes (the CS+ was a square and the CS- was a triangle) displayed on a computer screen and a burst of white noise was used as unconditioned stimulus (US). For analysis of the conditioned response (CR) components, an interval between CS+ and US of 8 seconds was used. After the acquisition phase, participants were tested using trials with the US preceded either by a CS+, a CS-, or a neutral stimulus (a circle). The results showed conditioned diminution of the UR and suggest that the second heart rate deceleration component (D2) is responsible for the occurrence of this phenomenon.

An epistemologically arrogant community of contending scholars: a pre-Socratic perspective on the past, present, and future of the Pavlovian Society

The paper begins with a statement of the Society's purpose and its pre-Socratic roots. The Society differs from other contemporary scientific and scientific-professional societies in that it is thoroughly apolitical, unusually open to discussion and debate, and has had a restricted scholarly written impact. I then suggest and interpret six phases in the Society's history: (1) the pre-Socratic roots; (2) Pavlov and the young Gantt; (3) the Society's Gantt score of years; (4) the Joe McGuigan decade; (5) the Stewart Wolf era; (6) reforming the Society. I conclude with the hope that even if the content of the Society's interests changes, it will preserve the pre-Socratic approach against the various forms of intellectual barbarism that continue to arise.

KEYWORDS

Pre-Socratics, disinterested discussion, conflict of ideas, contending scholars, Pavlovian procedures

Revisiting the learning-without-awareness question in human Pavlovian autonomic conditioning: focus on extinction in a dichotic listening paradigm

Numerous studies have indicated that, consistent with current "cognitive" accounts of information processing, human Pavlovian autonomic discrimination acquisition cannot occur without awareness of the CS-US relationship. However, extinction studies have suggested that awareness is not necessary, findings that, in information-processing terms, have been explained by assuming that the processing by the extinction stage is parallel (automatic) rather than serial (controlled). This explanation was tested in an 80-subject study. The first, acquisition phase was a standard semantic differential conditioning arrangement with a 96-db white noise as US, and a "long" CS-US interval of 8 s, with ten trials each of CS+ (paired with US) and CS- (unpaired) trials. In extinction (USs omitted), in order to obtain non-autonomic indices of processing and thereby test the information-processing account of "unaware" autonomic conditioning during extinction, a dichotic listening task was implemented, with the CSs presented in the unattended channel (ear), while the subject had to perform a semantic differential reaction task in an attended-to channel (other ear). In early extinction, the electrodermal response occurring at an interval of 9-15 s after CS onset (i.e., following placement of the US during acquisition) and the finger-pulse-volume response occurring at an interval of 4-11 s after CS onset both showed reliable conditioning, but reaction-time and subjective-report data for the recognized critical words indicated serial rather than parallel processing of the CSs during extinction.

UCS inflation and human aversive autonomic conditioning

Fifty students participated in a differential conditioning paradigm. In the first part of the experiment, one neutral slide (CS+) was paired with a tone (UCS) and another neutral slide (CS-) was never followed by a tone. During the subsequent inflation phase, unsignalled UCSs gradually increased in strength for the inflation group while they were kept constant for the control group. During extinction trials, the inflation group initially showed relatively stronger UCS expectancies on the CS+ trials than the control group. In contrast to what was predicted, the UCS inflation procedure did not result in stronger conditioning effects of the skin conductance response compared to the control procedure. The effectiveness of the UCS inflation procedure was not related to trait anxiety.