Visual motion illusions, eye movements, and the search for objectivity

The initial interpretations of motion phenomena are often in terms of eye movements. It reflects a desire to link an objective expression of motion (of the eyes) with a subjective experience of motion. This approach is examined historically with respect to induced motion, motion aftereffects, visual vertigo, autokinetic effects and stroboscopic motion. All but one of these phenomena were initially observed in the natural environment and they have subsequently been studied under laboratory conditions. Eye movements are not correlated with induced motion, the motion aftereffect, or stroboscopic motion, but they do correspond to the direction and extent of visual vertigo. The extent of apparent visual motion in the autokinetic effect far exceeds that of involuntary eye movements but there might be a weak relation between them. If eye movements are to provide a reasonable account of motion illusions then they should apply to all the contours that are visible. This does apply to visual vertigo, but not to induced motion, the motion aftereffect and stroboscopic motion, all of which involve relative motion in a visible display. The autokinetic phenomenon involves the perception of isolated stimuli, and so interpretations in terms of some internal eye movement signals remain sustainable.     

Book reviews

CHINA

TANG KWOK‐LEUNG. Colonial State and Social Policy: social Welfare Development in Hong Kong 1842–1997. Lanham, MD: University Press of America, 1998. 192 pp. US$36.00, hardcover.

ZHENG YONGNIAN. Discovering Chinese Nationalism in China: modernity, Identity, and International Relations. Cambridge: Cambridge University Press, 1999. 208 pp. US$54.95, hardcover; US$19.95, paper.

STEVAN HARRELL, BAMO QUBUMO and MA ERZI (photographs by Zhong Dakun). Mountain Patterns, The Survival of Nuosu Culture in China. Seattle and London: University of Washington Press, 2000. Colour and black‐and‐white illustrations. No price given, paper.

PENG XIZHE with ZHIGANG GUO (eds). The Changing Population of China. Oxford: Blackwell Publishers, 2000. 312 pp. Figures, tables, index. £50.00, US$68.95, hardcover; £15.99, US$31.95, paper.

ROBERT S. ROSS (ed). After the Cold War: domestic Factors and U.S.‐China Relations. Armonk: M. E. Sharpe, 1998. xiv, 208 pp. Charts, figures, index. US$59.95, hardcover; US$22.95, paper.

PING CHEN. Modern Chinese: history and Sociolinguistics. Cambridge: Cambridge University Press, 1999. 229 pp. Introduction, tables, notes, references, index. US$59.95, hardcover; US$21.95, paper.

JAPAN, KOREA

MARK R. MULLINS. Christianity Made in Japan: a Study of Indigenous Movements. Honolulu: University of Hawai'i Press, 1998. 288 pp. Illustrations, preface, notes, bibliography, index. US$24.95, paper.

HIROSUKE KAWANISHI (ed). The Human Face of Industrial Conflict in Post‐war Japan. London: Kegan Paul International, 1999. 287 pp. Introduction, chronology of events, translation of Japanese organisational and statutory names, index. US$93.50, hardcover.

YUKIKO KOSHIRO. Trans‐Pacific Racisms and the US Occupation of Japan. New York: Columbia University Press, 1999. xi, 295 pp. US$21.50, paper.

PHYLLIS BIRNBAUM. Modern Girls, Shining Stars, the Skies of Tokyo: five Japanese Women. New York: Columbia University Press, 1999. 255 pp. US$29.00; UK£19.95, hardcover.

ROBIN M. LEBLANC. Bicycle Citizens: the Political World of the Japanese Housewife. Berkeley: University of California Press, 1999. 246 pp. US$14.95, paper.

SOUTH, WEST & CENTRAL ASIA

ROWENA ROBINSON. Conversion, Continuity and Change: lived Christianity in Southern Goa. New Delhi, Thousand Oaks, London: Sage Publications, 1998. 236 pp. £27.50, hardcover.

RAJAT GANGULY. Kin State Intervention in Ethnic Conflicts: lessons from South Asia. New Delhi: Sage Publications, 1998.266 pp. Map, notes, bibliography, index. Rs. 350, hardcover.

SOUTHEAST ASIA

DANNY UNGER. Building Social Capital in Thailand: fibers, Finance, and Infrastructure. Cambridge: Cambridge University Press, 1998. 227 pp. A$90.00, hardcover; A$29.95, paper.

JEFFREY R. VINCENT, ROZALI MOHAMED ALI and ASSOCIATES. Environment and Development in a Resource‐Rich Economy: Malaysia Under the New Economic Policy. Cambridge, MA: Harvard University Press, 1997. 364 pp. Foreword, preface, bibliography, index. US$46.95, hardcover; US$22.95, paper.

GENERAL ASIA

ANITA CHAN, B. J. TRIA KERKVLIET and J. UNGER (eds). Transforming Asian Socialism: China and Vietnam Compared. St. Leonards, NSW: Allen & Unwin, 1999. 240 pp. A$24.95, paper.

KURT W. RADTKE and J. A. STAM et al. (eds). Dynamics in Pacific Asia: conflict, Competition and Cooperation. London and New York: Kegan Paul International, 1998. 287 pp. US$110, hardcover.

YUE‐MAN YEUNG (ed). Urban Development in Asia: retrospect and Prospect. Hong Kong: Hong Kong Institute of Asia‐Pacific Studies, Chinese University of Hong Kong, 1998. 453 pp. Plates, introduction, notes, index. No price given, hardcover.     

Dietary Variability During Bronze Age in Central Italy: First Results

This research aims at delineating the dietary practices in Central Italy during the Bronze Age. The study of food choices is a mean for investigating palaeoenvironmental agricultural and economic activities and social relationships, which have been little explored until now in Italy from this specific perspective. Recent researches have showed that the Middle Bronze Age is a crucial period of dietary changes in Italy. Following these first observations, we studied three Bronze Age sites in Tuscany and Latium: Grotta dello Scoglietto, Grotta Misa and Felcetone. Analyses of stable carbon, nitrogen and sulphur isotopes on 38 human and 22 animal collagen samples were performed. The results show three different dietary patterns. Data from Grotta dello Scoglietto (Early Bronze Age) indicate a high‐protein intake, with a probable consumption of fish. Additionally, sulphur results let us infer the presence of some non‐local people. Individuals from Felcetone (Initial phase of the Middle Bronze Age) show a terrestrial diet dominated by plant proteins, which suggests a low δ¹⁵N food intake, namely legumes, as well as C₄ plant, such as millet. Finally, values from Grotta Misa (Middle Bronze Age) highlight a mixed terrestrial diet and the consumption of millet. Given the variety of the obtained results, we are able to conclude that the transition from the Early to the Middle Bronze Age represents a moment of change, which is reflected by the presence of different dietary patterns. Copyright © 2015 John Wiley & Sons, Ltd.     

Age‐at‐Death Estimates from a Disarticulated,Fragmented and Commingled Archaeological Battlefield Assemblage

Estimation of age‐at‐death is an important and challenging part of any investigation of human remains. Extensive research has been undertaken on this subject as demographic information contributes much to bioarchaeological and forensic work. Disarticulated, fragmentary and commingled human remains occur from a wide range of spatial and temporal contexts, and estimation of age‐at‐death can be particularly challenging in these collections. This study evaluated the impact of preservation on techniques that might be applied and their relative utility, using human remains from the site of the Smith's Knoll associated with the Battle of Stoney Creek, a War of 1812 collection from Ontario Canada with some supporting documentary evidence on age‐at‐death. Features assessed were the pubic symphysis, auricular surface and epiphyseal fusion in the innominate. An age‐at‐death estimate was produced for 16 out of 19 individuals considered; the highest minimum number of individuals (MNI) was 24 (right radius) from 2701 identifiable fragments. The pubic symphysis made no contribution to construction of a demographic profile, but as has been suggested previously epiphyseal fusion was useful in this respect. Results demonstrate that previous statements regarding preservation of the auricular surface and its utility in fragmented and poorly preserved collections need to be carefully evaluated. Although 129 fragments of innominate were recorded just one had an auricular surface and post auricular area that could be fully assessed. Transition Analysis was easier to apply than techniques developed previously, and findings from this study suggest that use of the forensic prior distribution could assist in assessment of battlefield assemblages. These results raise some valuable points that need to be considered in any future attempts to improve age‐at‐death estimates using the auricular surface, and important questions regarding expectations for estimation of age‐at‐death in disarticulated, fragmented and commingled collections of human bone. Copyright © 2015 John Wiley & Sons, Ltd.     

Isotopic Evidence for Marine Consumption and Mobility in the Atacama Desert (Quillagua,Northern Chile)

Archaeological research in the Atacama Desert has recovered evidence of considerable cultural variability. This variability seems to have increased during the Late Intermediate Period (AD 950–1400). The oasis of Quillagua, located at the margins of the Loa River in northern Chile, between the Andes and the coast (70 km from the Pacific Ocean), has shown important evidence regarding this cultural diversity. The variety in the archaeological evidence found at Quillagua has been interpreted as the result of two different cultural influences at the oasis: the Pica‐Tarapacá who occupied the coastal and inland regions to the north of Quillagua and the Atacama who occupied the oasis and fertile areas southeast of Quillagua. Here, we present the results of stable carbon, nitrogen and oxygen isotope analyses of 23 individuals recovered from the Cementerio Oriente in Quillagua, in order to test whether the observed cultural variability is also reflected in diet and mobility patterns. Results from carbon and nitrogen isotope measurements indicate the importance of marine protein, as well as a contribution of maize in the diet of some individuals. Four individuals show low δ¹⁸O values, suggesting a possible highland or non‐local origin, whereas values for the remaining individuals are consistent with lowland populations. Together, the results support the idea that the Quillagua oasis represented an important site of interaction between the Tarapacá and Atacama cultures, with close contacts with the coast but also with the presence of individuals from the highlands. Copyright © 2015 John Wiley & Sons, Ltd.     

The New ‘Coimbra Method’: A Biologically Appropriate Method for Recording Specific Features of Fibrocartilaginous Entheseal Changes

This paper presents a revised version of the Coimbra method for recording fibrocartilaginous entheses. The method itself is the only biologically appropriate recording method for fibrocartilaginous entheses that scores features separately, thereby ensuring that the aetiology of individual features can be studied. The method divides the enthesis into two zones, scoring the relevant features in each zone. These features represent either bone formation or bone destruction and include erosive lesions, fine and macro‐porosity, and cavitations. The revised method includes a new feature, textural change, which is scored as absent or present when it involves 50% or more of the surface. All other features are now scored as zero (absent), one or two with the higher score representing greater expression of the feature. This change in scoring has led to the reduction of inter‐observer error with approximately 80% agreement for overall feature scores for both the common extensor origin and subscapularis insertion. The simplification of the scores and the reduction in inter‐observer error mean that the method is now recommended for widespread use. Copyright © 2015 John Wiley & Sons, Ltd.     

New Evidence for Fish Processing in the Ancient Eastern Mediterranean: Formalised Epinephelus Butchery in Fifth Century bc Kinet Höyük,Turkey

Archaeological evidence for fish preparation in the Eastern Mediterranean is scarce. A Late fifth century deposit at Kinet Höyük provides tangible evidence for the systematic butchering of large individuals of Epinephelus (groupers), and possibly of Mugilidae (mullets), and Clarias gariepinus (African catfish). Butchery marks on head and proximal trunk regions of groupers follow a consistent pattern, indicating the processing of large fish heads for, apparently, local redistribution and consumption at the settlement. Although elements of the vertebral column remaining between the atlas and the ultimate vertebra are virtually absent in the assemblage associated with these butchered fish remains, this differential representation of elements does not appear to be an unequivocal reflection of fish processing techniques and subsequent trade. The insufficiency of research on ancient fisheries and fishing in the Eastern Mediterranean poses an obstacle to contextualise this deposit within a general historical and archaeological framework. Copyright © 2014 John Wiley & Sons, Ltd.     

Biocultural Consequences of Spanish Contact in the Lambayeque Valley Region of Northern Peru: Internal Enamel Micro‐Defects as Indicators of Early Life Stress

The present study utilises dental histological methods to analyse enamel micro‐defects as indicators of early life stress in indigenous Muchik individuals interred at two sites: La Capilla Santa María Magdalena de Eten (CSMME) (n = 15) and La Capilla del Niño Serranito (CNS) (n = 15), both located in the Lambayeque Valley region of northern Peru. Individuals interred at CNS date to the Early Colonial Period (AD 1533–1610), and individuals interred at CSMME date to the Middle/Late Colonial Period (AD 1625–1760), thus permitting comparison of childhood stress events between the Early and Middle/Late Colonial Periods. Results reveal a high prevalence of Wilson bands at both sites, although a lower prevalence at the CSMME was observed in comparison with the CNS. This indicates that, over time, Muchik individuals in this town may have been able to acclimate to life under Spanish oppression. Stress chronologies suggest that early life stress possibly resulted from inadequate and less than desirable food and/or water available for supplemental feeding during early infancy, especially around the ages of 4 and 5 months. Furthermore, results show that individuals with enamel defects in the form of Wilson bands at both the CNS and CSMME had an earlier mean age‐at‐death (9.6 and 4.05 years, respectively) in comparison with those without observed Wilson bands (19.75 and 8.8 years, respectively). These results underscore the importance of not only regional and temporal studies of the biological consequences of Spanish contact in the Americas but also of investigating the relationship between early life stress and adult health and longevity in archaeological populations. Copyright © 2015 John Wiley & Sons, Ltd.     

Image‐Based Modelling from Unmanned Aerial Vehicle (UAV) Photogrammetry: An Effective,Low‐Cost Tool for Archaeological Applications

The recording and 3D modelling of complex archaeological sites is usually associated with high capital and logistical costs, because the data acquisition must be performed by specialists using expensive surveying sensors (i.e., terrestrial laser scanners, robotic total stations and/or ground‐penetrating radar). This paper presents a novel, low‐cost, user‐friendly photogrammetric tool for generating high‐resolution and scaled 3D models of complex sites. The results obtained with unmanned aerial vehicle (UAV) photogrammetry of an archaeological site indicate that this approach is semi‐automatic, inexpensive and effective, and that it guarantees quality.