L-Asparaginase: Basic Aspects

Asymmetries in Face Processing: Evidence for a Right Hemisphere Perceptual Advantage

“…The authors argue that such findings indicate that asymmetries obtain only if tasks require "higher-order" operations. It may be, however, that these "higher-order" operations are the comparison processes necessary to match two faces which Patterson and Bradshaw (1975) have shown dictate patterns of asymmetric performance. In this study subjects were asked to match schematic faces which were identical, different on all features (experiment I and 2) or different on only one set of features (experiment 3).…”

“…Clinical evidence indicates that right hemisphere damage leads to poorer performance on face recognition tasks (De Renzi and Spinnler, 1966; Warrington and James, 1967; Benton and Van Allen, 1968;Milner, 1968) while the recognition of faces presented in the left visual field (LVF) to normal adults has been found to be generally both faster (Rizzolatti, Umilta and Berlucchi, 1971; Geffen, Bradshaw and Wallace, 1971; Patterson and Bradshaw, 1975;Moscovitch, Scullion and Christie, 1976; Hay and Ellis, 1980) and more accurate (Hilliard, 1973 ;Ellis and Shepherd, 1975) than right visual field (RVF) presentation. In addition, such an advantage appears to be stable across age (Young and Ellis, 1976;Broman, 1978;Young and Bion, 1980).…”

“…The other approach involves varying the interstimulus interval (ISI) between target and stimulus faces which vary over trials, a task assumed to involve short-term memory components (e.g. Hilliard, 1973;Patterson and Bradshaw, 1975, experiment I ; Hay and Ellis, 1980, experiment 2 (1976, experiment I) presented pairs of schematic faces simultaneously in one of the VHFs for "same/different" matching and found no differences in response latencies dependent on VHF of presentation with presentation times 300 ms well above that necessary to prevent eye movements. A similar study by Hay (1978), using photographs of male faces presented for only IOO ms produced identical results.…”

“…I n the first approach, a single target face is memorised before lateral presentation of a block of stimulus faces, a task assumed to involve long-term memory components (e.g. Patterson and Bradshaw, 1975, experiment 2 and 3 ; Moscovitch et al, 1976, experiment 2; Hay and Ellis, 1980, experiment 2). The other approach involves varying the interstimulus interval (ISI) between target and stimulus faces which vary over trials, a task assumed to involve short-term memory components (e.g.…”

Cognitive style and lateral eye movements

“…Apparently, the differential activation of To test if individuals within each group tended to process both types of questions consistently However, the situation for broad categorizers is less straightforward. As a group, the direction This study has added a new factor, cognitive style of the individual, to the list of determinants the two hemispheres can be predicted not only from task type (Gur et al 1975;Kocel et al 1972;Weiten & Etaugh, 1974), task difficulty level (Patterson & Bradshaw, 1975), personality characteristics (Bakan & Shortland,1%9) or differential learning experiences (Bever & Chiarello, 1974), but also from the cognitive style of the individual, measured in this case by Pettigrew's C-W Scale. However, the links between cognitive style and hemispheric functioning must be seen as tenuous at this stage, precisely because of the lengthy list of predictors (as well as for any residual uncertainty about the significance of LEMs).…”