Journal of Human Evolution
 2014
DOI: 10.1016/j.jhevol.2014.04.006
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Sub-surface movement of stone artefacts at White Paintings Shelter, Tsodilo Hills, Botswana: Implications for the Middle Stone Age chronology of central southern Africa

Sigrid Staurset
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Sheila Coulson
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Cited by 31 publications

(19 citation statements)
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“…The nature of the changes appears to be incremental, with new technologies appearing across more than a meter of sediment, but this represents the limits of the resolution afforded by available archival and museum collections. The extent to which the patterns seen at Kisese II are a result of thick, arbitrary units of excavation [ 85 , 107 ] or later bioturbation can only be addressed through additional fieldwork, microstratigraphic approaches, and careful assessment of post-depositional processes by artifact refitting [ 132 , 133 ] and allied approaches.…”
Section: Discussionmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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“…The nature of the changes appears to be incremental, with new technologies appearing across more than a meter of sediment, but this represents the limits of the resolution afforded by available archival and museum collections. The extent to which the patterns seen at Kisese II are a result of thick, arbitrary units of excavation [ 85 , 107 ] or later bioturbation can only be addressed through additional fieldwork, microstratigraphic approaches, and careful assessment of post-depositional processes by artifact refitting [ 132 , 133 ] and allied approaches.…”
Section: Discussionmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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“…During this analysis, the location of each artefact was disregarded, so that raw material grouping, refitting and technological classification was not influenced by its position on site. This was done to lessen bias towards refitting of pieces located close together, which can affect interpretation, particularly of post-depositional movement (e.g., Cahen and Moeyersons, 1977;Cahen et al, 1979;Cahen, 1987;Close, 2000;Hofman, 1981;Hofman, 1986;Hofman, 1992;Staurset and Coulson, 2014;Vaquero et al, 2017;Villa, 1982). Artefacts were also recorded in a database by unit, raw material group and technological stage.…”
Section: Methodological Approach: Chaîne Op Eratoire With Emphasis On...mentioning
confidence: 99%
“…This contrasts with the Levallois-dominated production found in the Makgadikgadi basin, as does the complete lack of points made from natural blanks at the north-western MSA sites. Neither is the laminar technology component of some Makgadikgadi sites present at the northwestern sites (Brooks and Yellen, 1977;Brooks et al, 2006;Coulson et al, 2011;Staurset and Coulson, 2014). More strikingly, the Makgadikgadi points tend to be much larger in size than those from the earlier excavated sites.…”
Section: Other Kalahari Msa Sitesmentioning
confidence: 98%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…These were rare in the MSA, but large numbers have been recorded in levels assumed to represent transitional and Pleistocene LSA occupations (Robbins et al 2000). Nevertheless, refitting analysis of lithic materials at the site demonstrated large-scale vertical movement of artifacts (Staurset and Coulson 2014), which means fish remains in the Middle Stone Age may have percolated downward from Pleistocene LSA deposits.…”
Section: Middle Stone Age Adaptation To Extreme Environmentsmentioning
confidence: 97%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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