Age-related slowing in face and name recognition: evidence from event-related brain potentials

Age-related slowing in recognizing famous names and faces was investigated with event-related brain potentials (ERPs). In a group of young adults, item repetition induced early (220-340 ms) and late (400-700 ms) ERP modulations, apparently signaling the access to, respectively, domain-specific representations of faces and names and domain-general semantic knowledge about the persons. These repetition effects and other ERP components were then used as process-specific time markers in middle-aged and elderly participants. For both faces and names, the elderly participants' responses were slowed, but repetition priming in reaction times was not. The ERP latencies suggested that most of the age-related slowing occurred in the access to domain-specific representations and during response decision, whereas sensory and perceptual processing was largely spared.     

Die Bestimmung einer Unterschiedsschwelle für Gefühle

Zusammenfassung Eine Unterschiedsschwelle für Gefühle kann bestimmt werden, wenn man hierfür (abweichend von den Verfahren der Wahrnehmungspsychologie) nicht Reizgrößen, sondern physiologische Veränderungen, die mit Gefühlen korreliert sind, zugrunde legt. Es ist demnach die Frage zu stellen, bei welchem Grad einer solchen körperlichen Veränderung im Durchschnitt auch eine emotionale merklich wird.Als physiologische Variable wurden die Schwankungen des Hautwiderstandes (sog. psychogalvanische Reaktion) gewählt, da diese in enger Beziehung zum Auftreten von Gefühlen stehen. Im Experiment wurden Reizwörter optisch dargeboten, die von den Vpen hinsichtlich der Größe der Gefühlsbetonung paarweise miteinander zu vergleichen und zu beurteilen waren. Gleichzeitig wurden die bei der Darbietung der Reizwörter auftretenden Hautwiderstandsänderungen in Direktschreibung registriert. Zur Auswertung wurden die Flächen der Widerstandsänderungen in einem Näherungsmaß bestimmt. Aus den zusammengehörigen Widerstandsreaktionen wurden dann sowohl die Flächendifferenzen als auch die Flächenverhältnisse gebildet und mit den Urteilen der Vpen in Beziehung gesetzt.Die Bestimmung der Korrelation zwischen der radizierten Flächendifferenz der Widerstandsänderungen und der Beurteilung des Gefühlswertes des Reizwortpaars ergab: Die Tatsache, daß die Wortpaare um so eindeutiger beurteilt wurden, je größer die ihnen zugeordneten Flächendifferenzen waren, bestätigte zunächst die Hypothese, daß eine Unterschiedsschwelle für Gefühle in Einheiten eines physiologischen Korrelats angegeben werden kann.Aus den gewonnenen Meßwerten (Flächendifferenzen und Flächenverhältnisse) und den zugehörigen Urteilen wird alsdann die Bestimmung der Unterschiedsschwelle auf der Basis von 50% und von 75% richtiger Urteile an Hand verschiedener Methoden demonstriert.Eine weitere Aufgabe besteht darin, aus einer größeren Anzahl von Ergebnissen eine Maßeinheit für Gefühle abzuleiten.     

"A moment's monument": the central vision of Italian sculptor Medardo Rosso (1858-1928)

One of the basic limitations on visual perception is that it is impossible, in any given moment, to see the world sharply and full of colors beyond the central area of the visual field. This fact was popularized and brought to the attention of artists in the nineteenth century. To accurately represent the 'impression', or vision of a single glance, an artistic work should contain only a central area in focus surrounded by a progressively greater blur. The work of the Italian sculptor Medardo Rosso (1858-1928) may be the first artistic representation of differences in central and peripheral acuity. Despite using the medium of sculpture, typically three-dimensional, Rosso conceived of his art as two-dimensional because in a given moment it is possible to view a scene from only one viewpoint. The analysis of Rosso's photographs of his own sculptures emphasizes the areas of detail and relative blur, allowing a reconstruction of his point de vue unique--where the observer should stand when viewing that specific sculpture. We argue that the role of central and peripheral vision in subjective perception is critical to understanding the work of Rosso, aptly defined by critics as monument d'un instant.     

Associations between use of self-regulatory strategies and daily eating patterns: An experience sampling study in college-aged women

Previous theorizing suggests there are multiple means by which people regulate their emotions and impulses, but that these strategies vary in the degree to which they support goal attainment. Some have proposed that proactive strategies (e.g. situation selection, distraction) may be particularly effective, while interventive strategies (e.g. suppression) are less effective. Despite these diverging predictions, researchers have yet to examine spontaneous use of these strategies and their respective and combined efficacy when applied to momentary food desires experienced in daily life. In the present study, we assessed eating patterns for one week via ecological momentary assessment in college-aged women (N?=?106). Results from pre-registered analyses indicated that using a variety of strategies, including preventative strategies such as situation selection and distraction, was associated with greater self-control success, as indexed by weaker desires, higher resistance, lower likelihood of enacting desires, and less food consumed. A similar pattern was observed when participants implemented additional strategies during desire episodes, which they were more likely to do when their desires conflicted with other self-regulatory goals. All associations were observed while controlling for momentary hunger levels, dieting status, age, and body mass index. These findings are consistent with a growing body of work assessing people’s spontaneous use of emotion regulation strategies in everyday contexts, suggesting potential meta-motivational tendencies marked by flexible and adaptive use of self-regulatory strategies.

     

Endogenous attention modulates the temporal window of integration

Constructing useful representations of our visual environment requires the ability to selectively pay attention to particular locations at specific moments. Whilst there has been much investigation on the influence of selective attention on spatial discrimination, less is known about its influence on temporal discrimination. In particular, little is known about how endogenous attention influences two fundamental and opposing temporal processes: segregation – the parsing of the visual scene over time into separate features, and integration – the binding together of related elements. In four experiments, we tested how endogenous cueing to a location influences each of these opposing processes. Results demonstrate a strong cueing effect on both segregation and integration. These results are consistent with the hypothesis that endogenous attention can influence both of these opposing processes in a flexible manner. The finding has implications for arbitrating between accounts of the multiple modulatory mechanisms comprising selective attention.     

<Emphasis Type="Bold">Ultrahigh temporal resolution of visual presentation using gaming monitors and G-Sync</Emphasis>

Vision unfolds as an intricate pattern of information processing over time. Studying vision and visual cognition therefore requires precise manipulations of the timing of visual stimulus presentation. Although standard computer display technologies offer great accuracy and precision of visual presentation, their temporal resolution is limited. This limitation stems from the fact that the presentation of rendered stimuli has to wait until the next refresh of the computer screen. We present a novel method for presenting visual stimuli with ultrahigh temporal resolution (<1 ms) on newly available gaming monitors. The method capitalizes on the G-Sync technology, which allows for presenting stimuli as soon as they have been rendered by the computer’s graphics card, without having to wait for the next screen refresh. We provide software implementations in the three programming languages C++, Python (using PsychoPy2), and Matlab (using Psychtoolbox3). For all implementations, we confirmed the ultrahigh temporal resolution of visual presentation with external measurements by using a photodiode. Moreover, a psychophysical experiment revealed that the ultrahigh temporal resolution impacts on human visual performance. Specifically, observers’ object recognition performance improved over fine-grained increases of object presentation duration in a theoretically predicted way. Taken together, the present study shows that the G-Sync-based presentation method enables researchers to investigate visual processes whose data patterns were concealed by the low temporal resolution of previous technologies. Therefore, this new presentation method may be a valuable tool for experimental psychologists and neuroscientists studying vision and its temporal characteristics.     

Gesellschaftliche Aspekte narzisstischer Störungen

Since the 1970s psychoanalysts have repeatedly described how the spectrum of mental disorders has shifted from neurotic conflict pathology to structural disorders of the personality. Nobody, however, is born with a narcissistic or antisocial attitude. Based on the works of Lasch and Ottomeyer, in this article an attempt is made to highlight such social aspects in highly developed capitalistic countries, which provide assistance to allow people to remain loyal to the circumstances that impregnate and configurate them. In these circumstances the narcissistic grandiose self of the individual with an ideal blueprint of self-realization becomes a destructive ideal. In the case of failure only the following choice then seems to remain: either the failure is experienced as a personal, self-induced catastrophe and as a self-induced culpable blemish (i.e. as deserved) or the subject resorts to the “opium of collective pride”, e.g. by identification with the national football team, in order not to have to “accept the truth” of the injured self-esteem.     

The utilization of visual information in the control of reciprocal aiming movements

Two experiments examined on-line processing during the execution of reciprocal aiming movements. In Experiment 1, participants used a stylus to make movements between two targets of equal size. Three vision conditions were used: full vision, vision during flight and vision only on contact with the target. Participants had significantly longer movement times and spent more time in contact with the targets when vision was available only on contact with the target. Additionally, the proportion of time to peak velocity revealed that movement trajectories became more symmetric when vision was not available during flight. The data indicate that participants used vision not only to 'home-in' on the current target, but also to prepare subsequent movements. In Experiment 2, liquid crystal goggles provided a single visual sample every 40 ms of a 500 ms duty cycle. Of interest was how participants timed their reciprocal aiming to take advantage of these brief visual samples. Although across participants no particular portion of the movement trajectory was favored, individual performers did time their movements consistently with the onset and offset of vision. Once again, performance and kinematic data indicated that movement segments were not independent of each other.