Suppression During Binocular Rivalry Broadens Orientation Tuning

ABSTRACT— During binocular-rivalry suppression, an ordinarily visible stimulus is erased from awareness, but how is the sensory representation of that stimulus affected? Although it is established that rivalry suppression attenuates signal strength, the influence of suppression on signal fidelity remains unknown. Here, we show that noise plays a hitherto undiscovered role in the degradation of the percept under suppression. In Experiment 1, we measured psychometric functions for a stimulus presented under dominance and suppression, and found that the slope of these functions was shallower under suppression—a result suggesting that the signal representation was rendered noisier. Experiment 2 then revealed the source of this noise: An examination of the influence of suppression on the orientation bandwidth of noise masking showed that tuning bandwidth is significantly broadened under suppression. Thus, the discriminability of a suppressed stimulus is weakened not only by a general decrease in signal strength, but also by broader orientation tuning that introduces more noise in the neural representation of the suppressed stimulus.     

Adolescent–parent attachment characteristics and quality of youth sport friendship

ObjectivesTo examine the link between security of adolescent–parent attachment relationships and experiences of friendship quality in male team sport participants.Design and methodNinety six male adolescents involved in team sports completed self-report assessments of relationship security with a key parental attachment figure and of the nature of their friendship with a nominated sporting best friend. Teammates and coaches also provided ratings related to how easy they found it to get along with participants.ResultsResults provided evidence that the nature of the adolescent–parent attachment relationship was significantly related to sporting friendship experiences. More secure adolescent–parent attachment characteristics corresponded to more positive sporting friendships. Furthermore, sporting friendship dyads where both friends reported more secure attachment relations with parents were experienced more positively than dyads where both friends were less securely attached to parents or even where one friend was less securely attached.ConclusionThere is a suggestion that adolescent attachment relations with parents are indicative of underpinning working models of attachment that may subsequently influence the manner in which youngsters negotiate friendships in sporting contexts.     

The effect of embedded bonus rounds on slot machine preference

Twenty‐three university students completed a simulated slot machine task involving the concurrent presentation of two slot machines that were varied both in win density and the inclusion of a bonus round feature to evaluate the effect of embedded bonus rounds on participant response allocation. The results suggest that participants allocated a greater percentage of responses to machines with embedded bonus rounds across both dense (Bonus: M = 68.4, SD = 19.2; No Bonus: M = 51.2; 9.6) and lean (Bonus: M = 48.8, SD = 9.6; No Bonus: M = 31.6, SD = 19.2) reinforcement schedules, in which the overall reinforcement rate across all machines was held constant.     

Does obsessive-compulsive personality disorder belong within the obsessive-compulsive spectrum?

It has been proposed that certain Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition Axis I disorders share overlapping clinical features, genetic contributions, and treatment response and fall within an "obsessive-compulsive" spectrum. Obsessive-compulsive personality disorder (OCPD) resembles obsessive-compulsive disorder (OCD) and other spectrum disorders in terms of phenomenology, comorbidity, neurocognition, and treatment response. This article critically examines the nosological profile of OCPD with special reference to OCD and related disorders. By viewing OCPD as a candidate member of the obsessive-compulsive spectrum, we gain a fresh approach to understanding its neurobiology, etiology, and potential treatments.     

Correction to: Distinguishing volumetric content from perceptual presence within a predictive processing framework

The original version of this article unfortunately has missing statement in the Acknowledgments section.     

Distinguishing volumetric content from perceptual presence within a predictive processing framework

Phenomenology and the Cognitive Sciences - I argue for an overlooked distinction between perceptual presence and volumetric content, and flesh it out in terms of predictive processing. Within the...