Vigilance Behavior of Pronghorns in Different Habitats

1990 ◽  
Vol 71 (3) ◽  
pp. 460-462 ◽  
Author(s):  
A. E. Goldsmith
Keyword(s):  
Vigilance Behavior

scholarly journals Vigilance behavior of pyrenean chamois Rupicapra pyrenaica pyrenaica: Effect of sex and position in the herd

2010 ◽  
Vol 56 (2) ◽  
pp. 232-237 ◽  
Author(s):  
Antoni Dalmau ◽  
Alfred Ferret ◽  
Xavier Manteca
Keyword(s):  
Social Interactions ◽  
Group Size ◽  
Group Living ◽  
Advantages And Disadvantages ◽  
Rupicapra Pyrenaica ◽  
Vigilance Behavior ◽  
Focal Animal ◽  
Risk Of Predation ◽  
Pyrenean Chamois ◽  
Optimal Group Size

Abstract The Pyrenean chamois Rupicapra pyrenaica pyrenaica is a mountain-dwelling ungulate with an extensive presence in open areas. Optimal group size results from the trade off between advantages (a reduction in the risk of predation) and disadvantages (competition between members of the herd) of group living. In addition, advantages and disadvantages of group living may vary depending on the position of each individual within the herd. Our objective was to study the effect of central vs. peripheral position in the herd on feeding and vigilance behavior in male and female Pyrenean chamois and to ascertain if a group size effect existed. We used focal animal sampling and recorded social interactions when a focal animal was involved. With males, vigilance rate was higher in the central part of the group than at the periphery, probably due to a higher density of animals in the central part of the herd and a higher probability of being disturbed by conspecifics. With females, vigilance rate did not differ according to position in the herd. Females spent more time feeding than males, and males showed a higher frequency of the vigilance behavior than females. We did not observe a clear relationship between group size and vigilance behavior. The differences in vigilance behavior might be due to social interactions.

Spatial and temporal uncertainty as determinants of vigilance behavior.

1964 ◽  
Vol 67 (2) ◽  
pp. 127-131 ◽  
Author(s):  
Jack A. Adams ◽  
Lawrence R. Boulter
Keyword(s):  
Temporal Uncertainty ◽  
Vigilance Behavior

The Effects of Ambient Noise upon Signal Detection

1967 ◽  
Vol 9 (3) ◽  
pp. 277-284 ◽  
Author(s):  
Angelo Mirabella ◽  
Donald A. Goldstein
Keyword(s):  
Signal Detection ◽  
Ambient Noise ◽  
Detection Performance ◽  
Theory And Practice ◽  
Threshold Sensitivity ◽  
Sensory Interaction ◽  
Vigilance Behavior ◽  
Interaction Phenomenon

One aspect of the sensory interaction phenomenon was reviewed, the effect of ambient noise upon signal detection performance. An objective of this review was to arrive at possible generalizations about the effects of noise through an examination of variables affecting both similarities and divergencies of results. A second objective was to discuss some of the limitations of noise research for theory and practice, using sonar surveillance in undersea warfare as a reference operation. The conclusions from the review were organized under two major headings:(I) effects of noise for the alerted operator case involving threshold sensitivity, and (2) effects of noise for the unalerted operator case involving vigilance behavior. The limitations of the literature for theory and practice were also discussed under these major headings.

scholarly journals Threat Vigilance and Intrinsic Amygdala Connectivity

2022 ◽  
Author(s):  
Peter Kirk ◽  
Avram J Holmes ◽  
Oliver Joe Robinson
Keyword(s):  
Individual Differences ◽  
Trait Anxiety ◽  
Resting State ◽  
Resting State Fmri ◽  
Periaqueductal Gray ◽  
Behavioral Measure ◽  
Fmri Data ◽  
Vigilance Behavior ◽  
Prefrontal Circuitry ◽  
Threat Of Shock

A well documented amygdala-dorsomedial prefrontal circuit is theorized to promote attention to threat (‘threat vigilance’). Prior research has implicated a relationship between individual differences in trait anxiety/vigilance, engagement of this circuitry, and anxiogenic features of the environment (e.g. through threat-of-shock and movie-watching). In the present study, we predicted that—for those scoring high in self-reported anxiety and a behavioral measure of threat vigilance—this circuitry is chronically engaged, even in the absence of anxiogenic stimuli. Our analyses of resting-state fMRI data (N=639) did not, however, provide evidence for such a relationship. Nevertheless, in our planned exploratory analyses, we saw a relationship between threat vigilance behavior (but not self-reported anxiety) and intrinsic amygdala-periaqueductal gray connectivity. Here, we suggest this subcortical circuitry may be chronically engaged in hypervigilant individuals, but that the amygdala-prefrontal circuitry may only be engaged in response to anxiogenic stimuli.

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