Behavioral and antennal electrophysiological responses of a predator ant to the pygidial gland secretions of two species of Neotropical dung roller beetles

Chemoecology ◽  
2011 ◽  
Vol 22 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Vieyle Cortez ◽  
Mario E. Favila ◽  
José R. Verdú ◽  
Antonio J. Ortiz
Keyword(s):  
Pygidial Gland ◽  
Electrophysiological Responses ◽  
Roller Beetles

Chemical diversity and potential biological functions of the pygidial gland secretions in two species of Neotropical dung roller beetles

Chemoecology ◽  
2015 ◽  
Vol 25 (4) ◽  
pp. 201-213 ◽  
Author(s):  
Vieyle Cortez ◽  
José R. Verdú ◽  
Antonio J. Ortiz ◽  
Ángel R. Trigos ◽  
Mario E. Favila
Keyword(s):  
Chemical Diversity ◽  
Pygidial Gland ◽  
Biological Functions ◽  
Roller Beetles

The Involuntary Capture of Attention by Sound

2010 ◽  
Vol 57 (1) ◽  
pp. 68-76 ◽  
Author(s):  
Fabrice B. R. Parmentier ◽  
Pilar Andrés
Keyword(s):  
Older Adults ◽  
Mismatch Negativity ◽  
Visual Task ◽  
The Novel ◽  
Auditory Oddball ◽  
Current Trial ◽  
Electrophysiological Responses ◽  
Electrophysiological Studies ◽  
The Cross ◽  
Task Sets

The presentation of auditory oddball stimuli (novels) among otherwise repeated sounds (standards) triggers a well-identified chain of electrophysiological responses: The detection of acoustic change (mismatch negativity), the involuntary orientation of attention to (P3a) and its reorientation from the novel. Behaviorally, novels reduce performance in an unrelated visual task (novelty distraction). Past studies of the cross-modal capture of attention by acoustic novelty have typically discarded from their analysis the data from the standard trials immediately following a novel, despite some evidence in mono-modal oddball tasks of distraction extending beyond the presentation of deviants/novels (postnovelty distraction). The present study measured novelty and postnovelty distraction and examined the hypothesis that both types of distraction may be underpinned by common frontally-related processes by comparing young and older adults. Our data establish that novels delayed responses not only on the current trial and but also on the subsequent standard trial. Both of these effects increased with age. We argue that both types of distraction relate to the reconfiguration of task-sets and discuss this contention in relation to recent electrophysiological studies.

Preserving Integrity in the Face of Performance Threat

2012 ◽  
Vol 23 (12) ◽  
pp. 1455-1460 ◽  
Author(s):  
Lisa Legault ◽  
Timour Al-Khindi ◽  
Michael Inzlicht
Keyword(s):  
Error Detection ◽  
Error Monitoring ◽  
Error Related Negativity ◽  
Threatening Information ◽  
Electrophysiological Responses ◽  
The Face ◽  
And Performance ◽  
The Impact ◽  
The Brain

Self-affirmation produces large effects: Even a simple reminder of one’s core values reduces defensiveness against threatening information. But how, exactly, does self-affirmation work? We explored this question by examining the impact of self-affirmation on neurophysiological responses to threatening events. We hypothesized that because self-affirmation increases openness to threat and enhances approachability of unfavorable feedback, it should augment attention and emotional receptivity to performance errors. We further hypothesized that this augmentation could be assessed directly, at the level of the brain. We measured self-affirmed and nonaffirmed participants’ electrophysiological responses to making errors on a task. As we anticipated, self-affirmation elicited greater error responsiveness than did nonaffirmation, as indexed by the error-related negativity, a neural signal of error monitoring. Self-affirmed participants also performed better on the task than did nonaffirmed participants. We offer novel brain evidence that self-affirmation increases openness to threat and discuss the role of error detection in the link between self-affirmation and performance.

Structure and electrophysiological responses of gustatory organs on the ovipositor of the parasitoid Leptopilina heterotoma

2007 ◽  
Vol 36 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Joop C. van Lenteren ◽  
Sara Ruschioni ◽  
Roberto Romani ◽  
Joop J.A. van Loon ◽  
Yu Tong Qiu ◽  
...  
Keyword(s):  
Leptopilina Heterotoma ◽  
Electrophysiological Responses
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