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2010

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Articles 12511 - 12540 of 15854

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Ostracods (Crustacea) And Habitat Similarities In The Bolu Region (Turkey), Necmetti̇n Sari, Okan Külköylüoğlu Jan 2010

Ostracods (Crustacea) And Habitat Similarities In The Bolu Region (Turkey), Necmetti̇n Sari, Okan Külköylüoğlu

Turkish Journal of Zoology

A total of 41 freshwater ostracod species belonging to 21 genera was collected from 144 different aquatic bodies in the Bolu region during the summer of 2006. The genus Schellencandona and 12 species (Candona weltneri, C. sanociensis, C. lactea, Fabaeformiscandona cf. breuili, F. balatonica, F. brevicornis, F. protzi, F. latens, Schellencandona cf. belgica, Pseudocandona cf. semicognita, Potamocypris similis, and P. smaragdina) are new for the Turkish Ostracoda fauna. Additionally, 5 other species (Herpetocypris brevicaudata, Heterocypris salina, H. rotundata, Cyclocypris laevis, Trajancypris serrata) are new for Bolu. UPGMA analyses showed districts of Bolu in 5 clustering groups. The highest habitat similarity …

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Nucleolar Organizer Regions (Nors) In Cricetulus Migratorius (Pallas, 1773) And Meriones Tristrami Thomas, 1892 (Mammalia: Rodentia) From Central Anatolia, Nursel Aşan, İrfan Albayrak, Yasi̇n Demi̇rbaş, Tarkan Yorulmaz, Kubi̇lay Toyran, Serdar Gözütok Jan 2010

Nucleolar Organizer Regions (Nors) In Cricetulus Migratorius (Pallas, 1773) And Meriones Tristrami Thomas, 1892 (Mammalia: Rodentia) From Central Anatolia, Nursel Aşan, İrfan Albayrak, Yasi̇n Demi̇rbaş, Tarkan Yorulmaz, Kubi̇lay Toyran, Serdar Gözütok

Turkish Journal of Zoology

The distribution of nucleolar organizer regions (NORs) in Cricetulus migratorius and Meriones tristrami from Central Anatolia was determined. In the karyotype of Cricetulus migratorius the diploid number, fundamental number, and fundamental autosomal number are 22, 44, and 40, respectively. The diploid number, fundamental number, and fundamental autosomal number of Meriones tristrami are 72, 84, and 80, respectively. In Cricetulus migratorius, NORs occur in the telomeric regions of metacentric and subtelocentric autosome pairs. Furthermore, terminally located NORs in metacentric and acrocentric autosomes of Meriones tristrami are presented in this present paper.

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The Anatomy And Histology Of The Atrioventricular Conducting System In The Hedgehog (Hemiechinus Auritus) Heart, Abolghasem Nabipour Jan 2010

The Anatomy And Histology Of The Atrioventricular Conducting System In The Hedgehog (Hemiechinus Auritus) Heart, Abolghasem Nabipour

Turkish Journal of Zoology

This study examined the atrioventricular conducting system in 4 adult male hedgehogs (Hemiechinus auritus). The histological structure of these components was studied using routine histological methods. The AVN was located at the lower and anterior part of the interatrial septum, near the root of the aorta. It was almost oval and consisted of twisted cells. Internodal pathways in the hedgehog heart were not observed, but there were numerous purkinje-like fibers within the myocardium of the atrium. The AVB was a continuation of the AVN, as a compact structure, extended obliquely through the fibrous ring toward the apex of the interventricular …

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On The Growth Of The Scaldfish Arnoglossus Laterna (Walbaum, 1792) From İzmir Bay, Central Aegean Sea, Di̇lek Uçkun İlhan, Sencer Akalin, Okan Özaydin, Zafer Tosunoğlu, Semi̇h Leblebi̇ci̇ Jan 2010

On The Growth Of The Scaldfish Arnoglossus Laterna (Walbaum, 1792) From İzmir Bay, Central Aegean Sea, Di̇lek Uçkun İlhan, Sencer Akalin, Okan Özaydin, Zafer Tosunoğlu, Semi̇h Leblebi̇ci̇

Turkish Journal of Zoology

Scaldfish (Arnoglossus laterna) (n = 1892) were caught in İzmir Bay (Aegean Sea) from January 2005 to December 2006. Total length and weight of all specimens ranged from 3.9 to 16.0 cm and from 0.47 to 41.63 g, respectively. The overall ratio of females to males was 1:1.91. The length-weight relationships for females, males, and all specimens combined were estimated, respectively, as W = 0.0096 × L^{2.921}, W = 0.0111 × L^{2.857}, and W = 0.0096 × L^{2.917}; and the parameters of the von Bertalanffy growth equations were, respectively, L_{\infinity}= 17.58, 15.36, and 17.19 cm; k = 0.412, 0.461, and …

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Clutch And Egg Size Variation, And Productivity Of The House Sparrow (Passer Domesticus): Effects Of Temperature, Rainfall, And Humidity, Azi̇z Aslan, Mustafa Yavuz Jan 2010

Clutch And Egg Size Variation, And Productivity Of The House Sparrow (Passer Domesticus): Effects Of Temperature, Rainfall, And Humidity, Azi̇z Aslan, Mustafa Yavuz

Turkish Journal of Zoology

This study was conducted on the campus of the regional department of the forestry service, encompassing 2.25 ha in Antalya city center. The area has gardens and is surrounded by trees, providing nesting and feeding opportunities for many songbird species. The study aimed to determine clutch and egg size variation, breeding success, and productivity of the House Sparrow (Passer domesticus), in terms of clutch size and breeding attempts, and to evaluate variation in temperature, rainfall, and humidity in terms of breeding attempts and years, and their possible effects on given parameters of the species. In total, 2016 eggs were laid …

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Changes In Spring Migration Of The Wood Pigeon (Columba Palumbus) In Northwestern Croatia, Zdravko Dolenec, Petra Dolenec Jan 2010

Changes In Spring Migration Of The Wood Pigeon (Columba Palumbus) In Northwestern Croatia, Zdravko Dolenec, Petra Dolenec

Turkish Journal of Zoology

Several papers have shown the sensitivity of birds as monitors of climatic trends. We examined how a short-distance migrant bird, the wood pigeon, has responded to the recent climate change using data from a long-term study (1983-2007) in northwestern Croatia. The wood pigeon arrival dates have become 11.5 days earlier during the study period. This result suggests that the first arrival date of the wood pigeon is influenced by warm springs.

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New Records For Turkish Tachinidae (Diptera) Fauna, Kenan Kara, Yasemi̇n Kormaz, Serhat Kirikoğlu Jan 2010

New Records For Turkish Tachinidae (Diptera) Fauna, Kenan Kara, Yasemi̇n Kormaz, Serhat Kirikoğlu

Turkish Journal of Zoology

Nine Tachinidae species were recorded for the first time in Turkey. These are Medina melania (Meigen), Acemya acuticornis (Meigen), Allophorocera ferruginea (Meigen), Graphogaster vestita Rondani, Phasia pandellei (Dupuis), Xysta holosericea (Fabricius), Leucostoma tetraptera (Meigen), Cylindromyia interrupta (Meigen), and Besseria lateritia (Meigen).

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Occurrence Of Trypanosoma Sp. In Wild African Sharptooth Catfish (Clarias Gariepinus Burchell, 1822) In The River Asi (North-Eastern Mediterranean), Turkey, Egemen Konaş, Ercüment Genç, Gali̇p Kaya, Cavi̇t Erol Jan 2010

Occurrence Of Trypanosoma Sp. In Wild African Sharptooth Catfish (Clarias Gariepinus Burchell, 1822) In The River Asi (North-Eastern Mediterranean), Turkey, Egemen Konaş, Ercüment Genç, Gali̇p Kaya, Cavi̇t Erol

Turkish Journal of Zoology

Fifteen African sharptooth catfish (Clarias gariepinus Burchell, 1822) were collected from the River Asi (River Orontes) in Antakya (Hatay, Turkey) in November 2007, and fish blood samples were examined for the presence of blood parasites. The existence of infection with Trypanosoma (hemoparasite) was identified in 13 out of the 15 fish specimens. Currently there are no records of the presence of any species of Trypanosoma infecting Clarias gariepinus in Anatolia. Thus this study is the first report of Trypanosoma sp. infections in Clarias gariepinus in Turkey.

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Cover And Contents Jan 2010

Cover And Contents

Turkish Journal of Zoology

No abstract provided.

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Limnoecological Relationships Between Water Level Fluctuations And Ostracoda (Crustacea) Species Composition In Lake Sünnet (Bolu, Turkey), Okan Külköylüoğlu, Muzaffer Dügel, Muharrem Balci, Azi̇z Deveci̇, Derya Avuka, Mustafa Kiliç Jan 2010

Limnoecological Relationships Between Water Level Fluctuations And Ostracoda (Crustacea) Species Composition In Lake Sünnet (Bolu, Turkey), Okan Külköylüoğlu, Muzaffer Dügel, Muharrem Balci, Azi̇z Deveci̇, Derya Avuka, Mustafa Kiliç

Turkish Journal of Zoology

The ecological characteristics of ostracods in Lake Sünnet were monitored monthly between May 2005 and September 2007; 9 living and 5 subfossil ostracod taxa were recorded. Among the species, Ilyocypris getica was reported in Turkey for the first time, while Stenocypria fischeri was found for the second time in the country in 55 years. The most abundant species, Limnocythere inopinata, was collected in dry and wet months, while I. bradyi was the only species found in only the wet months. The 9 species clustered into 3 groups based on their ecological preference. Species composition and occurrences were closely related to …

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An Evaluation Of The Distribution Pattern Of The Common Chaffinch (Fringilla Coelebs) In Turkey, Utku Perktaş, Zafer Ayaş Jan 2010

An Evaluation Of The Distribution Pattern Of The Common Chaffinch (Fringilla Coelebs) In Turkey, Utku Perktaş, Zafer Ayaş

Turkish Journal of Zoology

The common chaffinch (Fringilla coelebs) is one of the most common and widespread of the Western Palearctic songbirds and breeds primarily in natural forests in the northern, western, and southwestern parts of Turkey. We reevaluated the distribution of this species in Turkey with recent observational data. Although this species has been considered a breeder in southeastern Turkey, results of this study suggest that it probably does not breed in the region any longer. We examined the effect of climatic (temperature, precipitation, potential evapotranspiration) and topographic (altitude) variables on common chaffinch distribution in Turkey. Our findings show that the presence of …

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Growth And Reproduction Of Blotched Picarel (Spicara Maena Linnaeus, 1758) In The Central Aegean Sea, Turkey, Ozan Soykan, Akin Türker İlkyaz, Gülnur Meti̇n, Hasan Tuncay Kinacigi̇l Jan 2010

Growth And Reproduction Of Blotched Picarel (Spicara Maena Linnaeus, 1758) In The Central Aegean Sea, Turkey, Ozan Soykan, Akin Türker İlkyaz, Gülnur Meti̇n, Hasan Tuncay Kinacigi̇l

Turkish Journal of Zoology

Growth and reproduction of the blotched picarel, Spicara maena (Linnaeus, 1758), were determined based on specimens (n = 2547) collected from the central Aegean Sea between July 2004 and June 2007. The samples consisted of 71.9% females, 16.2% males, and 11.9% immature individuals. The sex ratio of females to males was 1:0.23. The length-weight relationship was W = 0.011L^{3.02}, W = 0.011L^{3.00}, and W = 0.011L^{2.99} for the combined sexes, females, and males, respectively. For all samples and both sexes the length-weight relationship showed isometric growth. The von Bertalanffy growth equation was fitted on the basis of mean length-at-age data, …

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Life History Features Of The Nonindigenous Three-Spined Stickleback (Gasterosteus Aculeatus Linnaeus, 1758) In The Gomishan Wetland (Southeast Caspian Sea, Iran), Rahman Patimar, Mariam Horry Najafabadi, Manizheh Ghadi Souraki Jan 2010

Life History Features Of The Nonindigenous Three-Spined Stickleback (Gasterosteus Aculeatus Linnaeus, 1758) In The Gomishan Wetland (Southeast Caspian Sea, Iran), Rahman Patimar, Mariam Horry Najafabadi, Manizheh Ghadi Souraki

Turkish Journal of Zoology

The Caspian Sea forms the southern limit of the distribution range of the three-spined stickleback (Gasterosteus aculeatus), but little is known about its life history in this area. A total of 362 specimens were collected from the Gomishan wetland (southeast Caspian Sea, Iran) to describe the stickleback's life history characteristics. Samples were taken monthly between February and July of 2008. The maximum ages of the population observed were 2+ years for males and 3+ years for females. The length-weight relationship (LWR) was estimated as W = 0.0042TL^{3.711} for immature specimens, W = 0.0095TL^{3.1328} for males, and W = 0.0057TL^{3.4678} for …

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Growth And Reproduction Of Large-Scaled Gurnard (Lepidotrigla Cavillone Lacepède, 1801) (Triglidae) In The Central Aegean Sea, Eastern Mediterranean, Akin Türker İlkyaz, Gülnur Meti̇n, Ozan Soykan, Hasan Tuncay Kinacigi̇l Jan 2010

Growth And Reproduction Of Large-Scaled Gurnard (Lepidotrigla Cavillone Lacepède, 1801) (Triglidae) In The Central Aegean Sea, Eastern Mediterranean, Akin Türker İlkyaz, Gülnur Meti̇n, Ozan Soykan, Hasan Tuncay Kinacigi̇l

Turkish Journal of Zoology

Age, growth, and reproduction of the large-scaled gurnard were studied in the central Aegean Sea to provide fisheries managers with the essential data for science-based management. A total of 2342 samples were collected by trawl hauls between July 2004 and June 2007 from İzmir Bay (Turkey). The size of the samples ranged from 3.4 to 15.2 cm total length and the samples were composed of 35.2% females, 25.7% males and 39.1% immature individuals, with a female to male ratio of 1:0.73. The length-weight relationship was calculated as W = 0.0086L^{3.16} for all samples. The age composition of the samples was …

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Toxicity Of Trifluralin On The Embryos And Larvae Of The Red-Bellied Toad, Bombina Bombina, Ferah Sayim Jan 2010

Toxicity Of Trifluralin On The Embryos And Larvae Of The Red-Bellied Toad, Bombina Bombina, Ferah Sayim

Turkish Journal of Zoology

Many amphibian populations are in decline throughout the world, and one of the most important proposed causes for this decline is agrochemicals, especially pesticides. This study considers the effects of 120 h exposure of embryos and larvae of the red-bellied toad, Bombina bombina, to trifluralin, an herbicide, with renewal acute toxicity tests at 22 ± 1 °C. Adult males and females were induced to breed by gonadotropin injection to obtain test organisms. Lethal concentration values were determined through PROBIT analysis. The 120 h LC_{50} of trifluralin for the larvae was 11.80 mg L^{-1}, while the LC_{50} and EC_{50} for the …

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The Species Of Oopristus Steffan, 1968 (Hymenoptera: Torymidae: Toryminae: Monodontomerini) Of Turkey, With Descriptions Of Two New Species, Şener Tarla, Mi̇kdat Doğanlar, Celaletti̇n Gözüaçik Jan 2010

The Species Of Oopristus Steffan, 1968 (Hymenoptera: Torymidae: Toryminae: Monodontomerini) Of Turkey, With Descriptions Of Two New Species, Şener Tarla, Mi̇kdat Doğanlar, Celaletti̇n Gözüaçik

Turkish Journal of Zoology

The species of Oopristus Steffan, 1968 (Hymenoptera: Torymidae: Toryminae: Monodontomerini) of Turkey were studied. Oopristus turkestanicus (Skriptshinsky, 1929) was reared from the eggs of Apodiphus amygdali (Germar, 1817) (Hemiptera: Pentatomidae) in Balcalı, Adana, as a new record for Turkey. Additionally, 2 new species of the genus, O. tayfursokmeni Tarla and Doğanlar, sp. nov., and O. erganicus Tarla and Doğanlar, sp. nov., were described. The species were also reared from eggs of A. amygdali collected in Antakya, Hatay province, and Ergani, Diyarbakır province, respectively. The diagnostic characters of the species were illustrated and an identification key to species of the genus …

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Faunistic Study Of The Aquatic Beetles (Coleoptera: Helophoridae) In The Bayburt, Giresun, Gümüşhane, Ordu, And Trabzon Provinces Of Turkey, Abdullah Mart, Ümi̇t İncekara, Hani̇fi̇ Karaca Jan 2010

Faunistic Study Of The Aquatic Beetles (Coleoptera: Helophoridae) In The Bayburt, Giresun, Gümüşhane, Ordu, And Trabzon Provinces Of Turkey, Abdullah Mart, Ümi̇t İncekara, Hani̇fi̇ Karaca

Turkish Journal of Zoology

In this study, we established the presence of 25 aquatic beetle (Coleoptera: Helophoridae) species belonging to 5 subgenera from the Bayburt, Giresun, Gümüşhane, Ordu, and Trabzon provinces in the Black Sea region of Turkey. Specimens were collected between May 2007 and October 2007. Ten species are here recorded for the first time from the Black Sea region and 6 species are recorded for the first time in the research area. In addition, the habitats of these species found in the research area were given.

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Benthic Mollusk Composition Of Some Facies In The Upper-Infralittoral Zone Of The Southern Black Sea, Turkey, Mehmet Çulha, Levent Bat, Sani̇ye Türk Çulha, Meryem Yeşi̇m Çeli̇k Jan 2010

Benthic Mollusk Composition Of Some Facies In The Upper-Infralittoral Zone Of The Southern Black Sea, Turkey, Mehmet Çulha, Levent Bat, Sani̇ye Türk Çulha, Meryem Yeşi̇m Çeli̇k

Turkish Journal of Zoology

The aim of the present study was to describe the mollusk syntaxon associated with Cystoseira barbata and Mytilus galloprovincialis facies, which are widely distributed along the coasts of the Sinop Peninsula, Turkey. Four stations were chosen for each facies at depths of 0.5-5 m, and a total of 32 seasonal samplings were performed with 4 replicate groups between February 2006 and November 2006. As a result of the qualitative and quantitative analyses, the C. barbata facies was shown to be represented by 14 species and 5807 specimens, whereas that of M. galloprovincialis was represented by 11 species and 18,407 specimens. …

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Banded Karyotypes Of Allactaga Williamsi From Central Anatolia, Ati̇lla Arslan, Jan Zima Jan 2010

Banded Karyotypes Of Allactaga Williamsi From Central Anatolia, Ati̇lla Arslan, Jan Zima

Turkish Journal of Zoology

A chromosomal study of 2 populations of Allactaga williamsi from Konya province in Central Anatolia, Turkey, was performed. The diploid number of 48 chromosomes was found in all of the 5 specimens examined. All of the chromosomes except the Y were biarmed and could be identified by unique G-banding patterns. The C-banding analysis revealed a considerable amount of constitutive heterochromatin in all chromosomes. The C-band positive regions were distributed mainly in centromeric areas, whereas the Y chromosome stained uniformly and C-negatively. The active NORs were localized in 2 pairs of small metacentric and submetacentric autosomes. The species of the genus …

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First Record Of Five Terrestrial Snails In The State Of Qatar, Jassim A. Al-Khayat Jan 2010

First Record Of Five Terrestrial Snails In The State Of Qatar, Jassim A. Al-Khayat

Turkish Journal of Zoology

The present contribution outlines a first record of 5 encountered terrestrial gastropods new to Qatar. The preliminary account of these species and their zoogeographical origins are discussed. The species belong to 4 families: Subulinidae, with 2 genera, Zootecus and Allopeas; Polygyridae, with 1 genus, Polygra; Hygromiidae, with 1 genus, Monacha; and Helicidae, with 1 genus, Eobania.

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Nais Stolci Hrabĕ, 1981: A New Oligochaete (Annelida: Clitellata: Naididae) Species For Turkey, Seray Yildiz, Seyhan Ahiska Jan 2010

Nais Stolci Hrabĕ, 1981: A New Oligochaete (Annelida: Clitellata: Naididae) Species For Turkey, Seray Yildiz, Seyhan Ahiska

Turkish Journal of Zoology

As a result of sampling made in the Dicle (Tigris) River, southeastern Anatolia, Turkey, between March 2008 and April 2009, Nais stolci is reported as a new species for the Turkish fauna.

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Cover And Contents Jan 2010

Cover And Contents

Turkish Journal of Zoology

No abstract provided.

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First Record And Range Extension Of Field's Horned Viper, Pseudocerastes Fieldi Schmidt, 1930 (Squamata: Viperidae), From Fars Province, Southern Iran, Ali Gholamifard, Hamid Reza Esmaeili Jan 2010

First Record And Range Extension Of Field's Horned Viper, Pseudocerastes Fieldi Schmidt, 1930 (Squamata: Viperidae), From Fars Province, Southern Iran, Ali Gholamifard, Hamid Reza Esmaeili

Turkish Journal of Zoology

Based on extensive research, the first record of Field's horned viper, Pseudocerastes fieldi Schmidt, 1930 from Fars province, southern Iran, is presented.

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The Effect Of Caffeic Acid Phenethyl Ester On Bacterial Translocation And Intestinal Damage After Intestinal Obstruction, Cengi̇z Ara, Abuzer Di̇ri̇can, Seli̇m Erdoğan, Burhan Ateş, Di̇nçer Özgör, Fai̇k Tatli, M. Sai̇t Tekerekoğlu, Vedat Kirimlioğlu Jan 2010

The Effect Of Caffeic Acid Phenethyl Ester On Bacterial Translocation And Intestinal Damage After Intestinal Obstruction, Cengi̇z Ara, Abuzer Di̇ri̇can, Seli̇m Erdoğan, Burhan Ateş, Di̇nçer Özgör, Fai̇k Tatli, M. Sai̇t Tekerekoğlu, Vedat Kirimlioğlu

Turkish Journal of Medical Sciences

Intestinal obstruction (IO) induces bacterial translocation due to failure of the intestinal barrier function. Following bacterial overgrowth, its degradation products play a decisive role in the development of systemic septic complications. The aim of this study was to evaluate the effects of caffeic acid phenethyl ester (CAPE) on bacterial translocation and intestinal damage in an IO model in rats. Materials and methods: Complete IO was created in the distal ileum of rats by a single 4-0 silk suture. A total of 21 Wistar albino rats were randomized into 3 groups: Group 1, Sham (n = 7); Group 2, IO (n …

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Ontogeny And Funtional Morphology Of A Lower Cretaceous Carpinid Rudist (Bivalvia, Hippuritoida), Robert W. Scott, Meghan Weaver Jan 2010

Ontogeny And Funtional Morphology Of A Lower Cretaceous Carpinid Rudist (Bivalvia, Hippuritoida), Robert W. Scott, Meghan Weaver

Turkish Journal of Earth Sciences

Caprinuloidea rudists are locally abundant and widespread in Lower Cretaceous (Albian Stage) Edwards Formation in Texas. Landward of the shelf margin on the shallow marine Comanche Shelf rudists built circular and elongate bioherms with coarse-grained flank deposits. Two caprinid morphotypes suggest that some lived as elevators above the substrate and others were recumbent upon mobile grain flats. Elevators have elongated attached valves and weakly coiled free valves and recumbents have arcuate attached valves and strongly coiled free valves. Detailed morphologic studies are not possible on the many molds and casts, but a few specimens are silicified. Their internal structures can …

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Pollination Behaviour Of Linum Aretioides Boiss. (Linaceae) And Its Relations With Air Temperature And Humidity, Özcan Seçmen, Aykut Güvensen, Serdar Gökhan Şenol, Sali̇h Gücel Jan 2010

Pollination Behaviour Of Linum Aretioides Boiss. (Linaceae) And Its Relations With Air Temperature And Humidity, Özcan Seçmen, Aykut Güvensen, Serdar Gökhan Şenol, Sali̇h Gücel

Turkish Journal of Botany

Linum aretioides Boiss., a local endemic, is distributed only on 2 mountains (İzmir: Bozdağ; Denizli: Babadağ) at the western part of Turkey between 1630 and 2300 m altitudes, above the tree line. The studies were conducted on Mount Bozdağ above the ski complex between 1750 and 2150 m, and on Mount Babadağ between 1630-2300 m both located at subalpine zones. Four 8 × 8 m quadrats on Bozdağ and 5 on Babadağ were used for the experiments. The development of reproductive structures of plants and frequency of insect visits were observed from early May to late June in 2006 and …

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Cover And Contents Jan 2010

Cover And Contents

Turkish Journal of Mathematics

No abstract provided.

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Artificial Intelligence: Robots, Avatars And The Demise Of The Human Mediator, David Allen Larson Jan 2010

Artificial Intelligence: Robots, Avatars And The Demise Of The Human Mediator, David Allen Larson

Faculty Scholarship

As technology has advanced, many have wondered whether (or simply when) artificial intelligent devices will replace the humans who perform complex, interactive, interpersonal tasks such as dispute resolution. Has science now progressed to the point that artificial intelligence devices can replace human mediators, arbitrators, dispute resolvers and problem solvers? Can humanoid robots, attractive avatars and other relational agents create the requisite level of trust and elicit the truthful, perhaps intimate or painful, disclosures often necessary to resolve a dispute or solve a problem? This article will explore these questions. Regardless of whether the reader is convinced that the demise of …

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Crossing The ‘Uncanny Valley’: Adaptation To Cartoon Faces Can Influence Perception Of Human Faces, Haiwen Chen, Richard Russell, Ken Nakayama, Margaret Livingstone Jan 2010

Crossing The ‘Uncanny Valley’: Adaptation To Cartoon Faces Can Influence Perception Of Human Faces, Haiwen Chen, Richard Russell, Ken Nakayama, Margaret Livingstone

Psychology Faculty Publications

In this study we assessed whether there is a single face space common to both human and cartoon faces by testing whether adaptation to cartoon faces can affect perception of human faces. Participants were shown Japanese animation cartoon videos containing faces with abnormally large eyes. The use of animated videos eliminated the possibility of position-dependent retinotopic adaptation (because the faces appear at many different locations) and more closely simulated naturalistic exposure. Adaptation to cartoon faces with large eyes significantly shifted preferences for human faces toward larger eyes, consistent with a common, non-retinotopic representation for both cartoon and human faces. This …

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Evidence Of Metacognitive Control By Humans And Monkeys In A Perceptual Categorization Task, Joshua Redford Jan 2010

Evidence Of Metacognitive Control By Humans And Monkeys In A Perceptual Categorization Task, Joshua Redford

Curriculum, Instruction, and Foundational Studies Faculty Publications and Presentations

Metacognition research has focused on the degree to which nonhuman primates share humans’ capacity to monitor their cognitive processes. Convincing evidence now exists that monkeys can engage in metacognitive monitoring. By contrast, few studies have explored metacognitive control in monkeys and the available evidence of metacognitive control supports multiple explanations. The current study addresses this situation by exploring the capacity of human participants and rhesus monkeys (Macaca mulatta) to adjust their study behavior in a perceptual categorization task. Humans and monkeys were found to increase their study for high-difficulty categories suggesting that both share the capacity to exert …

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