The Role of Surface Information in Object Recognition: Studies of a Visual Form Agnosic and Normal Subjects

Perception ◽  
1994 ◽  
Vol 23 (12) ◽  
pp. 1457-1481 ◽  
Author(s):  
G Keith Humphrey ◽  
Melvyn A Goodale ◽  
Lorna S Jakobson ◽  
Philip Servos
Keyword(s):  
Object Recognition ◽  
Surface Properties ◽  
Fruits And Vegetables ◽  
Visual Analysis ◽  
Normal Subjects ◽  
Object Naming ◽  
Visual Form ◽  
Control Subjects ◽  
Natural Objects

Three experiments were conducted to explore the role of colour and other surface properties in object recognition. The effects of manipulating the availability of surface-based information on object naming in a patient with visual form agnosia and in two age-matched control subjects were examined in experiment 1. The objects were presented under seven different viewing conditions ranging from a full view of the actual objects to line drawings of those same objects. The presence of colour and other surface properties aided the recognition of natural objects such as fruits and vegetables in both the patient and the control subjects. Experiment 2 was focused on four of the critical viewing conditions used in experiment 1 but with a large sample of normal subjects. As in experiment 1, it was found that surface properties, particularly colour, aided the naming of natural objects. The presence of colour did not facilitate the naming of manufactured objects. Experiment 3 was focused on possible ways by which colour could assist in the recognition of natural objects and it was found that object naming was facilitated only if the objects were presented in their usual colour. The results of the experiments show that colour does improve recognition for some types of objects and that the improvement occurs at a high level of visual analysis.

Role of progesterone deficiency in the development of luteinizing hormone and androgen abnormalities in polycystic ovary syndrome

1996 ◽  
Vol 135 (3) ◽  
pp. 335-339 ◽  
Author(s):  
Tarek M Fiad ◽  
Sean K Cunningham ◽  
T Joseph McKenna
Keyword(s):  
Luteinizing Hormone ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Pulse Height ◽  
Pulse Amplitude ◽  
Normal Subjects ◽  
Sex Hormone Binding Globulin ◽  
Ovary Syndrome ◽  
Control Subjects

Fiad TM, Cunningham SK, McKenna TJ. Role of progesterone deficiency in the development of luteinizing hormone and androgen abnormalities in polycystic ovary syndrome. Eur J Endocrinol 1996;135:335–9. ISSN 0804–4643 The aetiology of polycystic ovary syndrome (PCOS) is unknown. It is uniquely characterized by oligomenorrhoea or amenorrhoea associated with normal or high oestrogen levels. This prospective clinical study was designed to examine the possible role of the lack of cyclical exposure to progesterone in the development of gonadotrophin and androgen abnormalities in PCOS. Gonadotrophin, androgen and oestrogen levels were measured in 15 PCOS patients and 10 normal subjects untreated and following treatment with the progestogen medroxyprogesterone acetate (MPA). When compared to control subjects, PCOS patients had significantly higher luteinizing hormone (LH) pulse height, pulse amplitude, integrated LH levels, LH response to gonadotrophin-releasing hormone (GnRH) and LH/FSH ratio; LH pulse frequency was similar in the two groups. In addition, the testosterone/sex hormone binding globulin ratio (T/SHBG), androstenedione and oestrone concentrations in the plasma were significantly higher in PCOS than in control subjects. When PCOS patients were treated with MPA for 5 days, there were significant decreases (p < 0.02–0.001) to values no longer different from normal: from 8.7 ± 1.2 to 5.6 ± 0.8 IU/l for integrated LH levels (untreated and MPA-treated PCOS); from 31.2 ±3.5 to 12.9 ±1.5 IU/l for LH response to GnRH; from 2.4 ± 0.26 to 1.3 ± 0.2 for LH/FSH ratio; and from 10.4 ± 0.63 to 8.5 ± for androstenedione. Significant decreases (p < 0.05–0.005) to values that still remained significantly higher than in normal subjects occurred for: LH pulse height, 11.05 ± 1.3 to 6.88 ± 0.79 IU/l (untreated and MPA-treated PCOS); LH pulse amplitude, 2.8 ± 0.5 to 1.8 ± 0.2 IU/l; total testosterone, 2.5 ± 0.2 to 2.0± 0.2 nmol/l; T/SHBG ratio, 14.1 ± 1.7 to 11 ± 1.5; and oestrone, 265 ± 24 to 208 ± 29 pmol/l. These results are consistent with the concept that ovulation failure and progesterone deficiency play a facilitatory role in the development of the hypothalamic-pituitary abnormality giving rise to disordered LH secretion in PCOS. TJ McKenna. Department of Investigative Endocrinology. St Vincent's Hospital, Elm Park. Dublin 4, Ireland

Role of kinins in pain and hyperalgesia: psychophysical studies in a patient with kininogen deficiency

1992 ◽  
Vol 83 (3) ◽  
pp. 337-341 ◽  
Author(s):  
Srinivasa N. Raja ◽  
James N. Campbell ◽  
Richard A. Meyer ◽  
Robert W. Colman
Keyword(s):  
Pain Threshold ◽  
Matched Control ◽  
Normal Subjects ◽  
Thenar Eminence ◽  
Control Subjects ◽  
Intradermal Administration ◽  
Heat Pain Threshold ◽  
Before And After ◽  
Psychophysical Studies

1. Bradykinin is considered to be an important mediator of pain and hyperalgesia associated with injury and inflammation. Psychophysical studies were conducted in a patient with complete kininogen deficiency to determine whether the absence of bradykinin was associated with abnormalities in pain sensibility. Pain evoked by heat stimuli to the thenar eminence was tested before and after a localized burn, which has been shown to cause hyperalgesia in normal subjects. In addition, pain evoked by intradermal administration of bradykinin (0.1–10 μg) to the forearm and the effects of bradykinin on pain induced by heat stimuli were studied. The patient rated the intensity of pain evoked by all heat stimuli relative to the pain induced by a 3s 45°C stimulus. 2. The patient's heat pain threshold (45°C) in the glabrous skin was similar to that of age-matched control subjects (n = 5) and to that previously observed in younger control subjects. 3. The burn resulted in a decrease in pain threshold and an increase in pain induced by suprathreshold stimuli. The magnitude of hyperalgesia was within the range observed in the age-matched control subjects and in younger control subjects. Thus, kinins are not essential for the development of hyperalgesia after heat injury. 4. In control subjects, intradermal injections of bradykinin produced pain and hyperalgesia to heat stimuli. In the patient, intradermal bradykinin injections induced minimal pain and no hyperalgesia to heat stimuli. Thus, congenital absence of kininogens may be associated with a deficiency in bradykinin receptors.

Catabolism of Human Fibrinogen Fragment D in Normal Subjects and Patients with Liver Cirrhosis

1980 ◽  
Vol 44 (03) ◽  
pp. 146-149 ◽  
Author(s):  
Nicole Ardaillou ◽  
Jeannine Yvart ◽  
Philippe Le Bras ◽  
Marie-José Larrieu
Keyword(s):  
Liver Cirrhosis ◽  
Clearance Rate ◽  
Plasma Clearance ◽  
Normal Subjects ◽  
Fractional Catabolic Rate ◽  
Human Fibrinogen ◽  
Plasma Pool ◽  
Catabolic Rate ◽  
Chloramine T

SummaryThe catabolism of human fragment D, (FgD), obtained by plasmin digestion of fibrinogen has been investigated in normal subjects and patients with liver cirrhosis and the results compared with those obtained for fibrinogen (Fg). Fg was labelled with I-125 and Fg D with I-131 using the chloramine T method. The plasma disappearance curves of both labelled proteins fitted a two exponential curve. In controls the plasma clearance rate of Fg D was greater than that of Fg as shown by the marked difference between the half-lives of these two tracers: 8,9 and 83,5 hours for Fg D and Fg respectively. The fractional catabolic rate of Fg D was 3.38 times the plasma pool per day. In nine patients with liver cirrhosis, catabolism of Fg was not modified. In contrast, catabolism of Fg D was significantly reduced with a half life of 13.0 hours and a low fractional catabolic rate. These results suggest the role of the liver in the catabolism of Fg D in man.

GERMAS ( Gerakan Masyarakat Hidup Sehat) Di Desa Rambah Hilir

2020 ◽  
Vol 3 (1) ◽  
pp. 100
Author(s):  
Elvira Junita ◽  
Yuli Handayani ◽  
Lufita Nur Alfiah
Keyword(s):  
Fruits And Vegetables ◽  
Healthy Lifestyle ◽  
Health Centre ◽  
Health Check ◽  
Community Partnership ◽  
Health It ◽  
Community Members ◽  
Healthy Life ◽  
Partnership Program

AbstrakPermasalahan kesehatan yang timbul saat ini merupakan akibat dari perilaku hidup yang tidak sehat. Gaya hidup yang kurang baik mengakibatkan tingginya angka kejadian Penyakit Tidak Menular, Di Desa Rambah Hilir kunjungan penderita hipertensi dan diabetes di Puskesmas Rambah Hilir I di tahun 2018 ini sampai bulan Juni 66 kasus Hipertensi 27 Kasus Diabetes. Gerakan Masyarakat Hidup Sehat (GERMAS) merupakan progam Pemerintah untuk mengajak masyarakat hidup sehat dengan focus pada 3 kegiatan utama yaitu melakukan aktifitas fisik, makan buah sayur dan cek kesehatan secara rutin minimal enam bulan sekali.Dalam Program Kemitraan Masyarakat ini upaya yang dilakukan adalah meningkatkan gaya hidup sehat yakni meningkatnya aktifitas fisik yang dilakukan dengan melaksanakan kegiatan rutin senam bersama setiap hari minggu dan meningkatkan konsumsi buah dan sayur dengan memanfaatkan lahan perkarangan rumah warga dengan menanam buah dan sayur dihalaman rumah untuk memenuhi kebutuhan konsumsi buah dan sayur. Upaya Peningkatan peran masyarakat dalam memeriksakan kesehatannya dengan mendirikan posko kesehatan untuk memudahkan masyarakat dalam memeriksa kesehatannya. Luaran yang telah dicapai adalah Adanya kegiatan senam rutin, meningkatnya konsumsi buah dan sayur dengan Adanya tanaman buah dan sayur disetiap rumah warga, makan buah dan sayur bersama setiap hari minggu, Adanya pemeriksaan kesehatan secara berkala.Abstract.Health problems that currently emergeare resulted from unhealthy living behaviours. A bad lifestyle causes an increase innon-communicable diseases cases. According to patient visit data until June 2018 at the community health centre (Puskesmas) Rambah Hilir I, Rambah Hilir Village, Rokan Hulu, Riau, it shows that there were 66 cases of hypertension and 27 cases of diabetes.The Healthy Life Society Movement (GERMAS) is a government program to encourage people to live a healthy lifestyle focusing on 3 main activities namely physical activities, eating vegetables, together with regular health check-upsat least once every 6 months. This community partnership program attempts to enhance the healthy lifestyle by intensifying physical activitiesthrough a routine collective exercise on every Sunday and increasing fruits and vegetables consumption. The community members’ yards are used as land to grow fruits and vegetables for meeting the community’s needs. Regarding the effort to improve the role of the community members to check their health, it was carried out by establishing a health post to facilitate them in checking-up their health. Outputs that have been achieved are the routine exercise; an increase in fruits and vegetables consumptionasthere are fruit and vegetable plants in every resident's houses; eating fruits and vegetables collectively on every Sunday; as well as regular health check-ups.

Understanding the Role of Chlorine and Ozone to Control Postharvest Diseases in Fruit and Vegetables: A Review

2020 ◽  
Vol 16 (4) ◽  
pp. 455-461
Author(s):  
Gabriela M. Baia ◽  
Otniel Freitas-Silva ◽  
Murillo F. Junior
Keyword(s):  
Chlorine Dioxide ◽  
Broad Spectrum ◽  
Fruits And Vegetables ◽  
Low Cost ◽  
Residual Effects ◽  
Pathogenic Microorganisms ◽  
Postharvest Diseases ◽  
Post Harvest ◽  
By Products

Fruits and vegetables are foods that come into contact with various types of microorganisms from planting to their consumption. A lack or poor sanitation of these products after harvest can cause high losses due to deterioration and/ or pathogenic microorganisms. There are practically no post-harvest fungicides or bactericides with a broad spectrum of action that have no toxic residual effects and are safe. However, to minimize such problems, the use of sanitizers is an efficient device against these microorganisms. Chlorine is the most prevalent sanitizing agent because of its broad spectrum, low cost and well-established practices. However, the inevitable formation of disinfection by-products, such as trihalomethanes (THMs) and haloacetic acids (HAAs), is considered one of the main threats to food safety. Alternative sanitizers, such as chlorine dioxide (ClO2) and ozone, are becoming popular as a substitute for traditional post-harvest treatments. Thus, this review addresses the use of chlorine, chlorine dioxide and ozone emphasizing aspects, such as usage, safe application, spectrum of action and legislation. In order to ensure the quality and safety of final products, the adoption of well-prepared sanitation and sanitation programs for post-harvest fruits and vegetables is essential.

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