Journal of Cognitive Neuroscience articles from July 1997

Journal of Cognitive Neuroscience archives from July 1997

Mental rotation studied by functional magnetic resonance imaging at high field (4 Tesla): performance and cortical activation.
July 1, 1997... INTRODUCTION Shepard and his colleagues pioneered a series of tasks involving mental rotation of visual images (Shepard & Metzler, 1971; Shepard & Cooper, 1982). Typically, subjects are shown two asymmetric figures and are asked to judge...

Transcranial magnetic stimulation of the prefrontal cortex delays contralateral endogenous saccades.
July 1, 1997... INTRODUCTION In everyday life, we constantly make eye movements to a number of competing stimuli in the environment. These eye movements are often reflexively driven to foveate objects, such as when attention is captured by a sudden motion or...

The neural substrate for concrete, abstract, and emotional word lexica: a positron emission tomography study.
July 1, 1997... INTRODUCTION Viewing written words activates a set of abstract codes in the brain-visual codes for perceptual analysis, an orthographic code that represents the visual form of known words, codes for the word's meaning (stored in semantic...

Verbal working memory load affects regional brain activation as measured by PET. (positron emission tomography)
July 1, 1997... INTRODUCTION In recent years there has been a dramatic increase in the study of cognitive processes by measuring changes in regional cerebral blood flow using neuroimaging techniques. One reason for this increase has been the adoption of a...

Visual imagery facilitates visual perception: psychophysical evidence.
July 1, 1997... INTRODUCTION Visual imagery is the mental invention or recreation of a visual-perceptual experience in the absence of retinal input. There have been two main approaches to the scientific study of visual imagery. In one, researchers have looked...

Intact perceptual priming in a patient with damage to the anterior inferior temporal lobes.
July 1, 1997... INTRODUCTION The focus of this paper is on the functional role of the anterior inferior temporal lobes in visual object processing in humans. Although relatively little is known about the anatomical structures that mediate this process in...

Mamillary body lesions in monkeys impair object-in-place memory: functional unity of the fornix-mamillary system.
July 1, 1997... INTRODUCTION The role of the mamillary bodies in nonhuman primate memory has remained controversial. This is in contrast to the literature on human memory deficits after mamillary body damage, where many authors have proposed that such damage...

Higher-order associative learning in amnesia: evidence from the serial reaction time task.
July 1, 1997... INTRODUCTION It is generally believed that implicit learning and memory arc spared in patients with anterograde amnesia despite drastic impairments on standard tests of memory such as recognition and recall (for reviews see Moscovitch,...

Effects of early and late nocturnal sleep on declarative and procedural memory.
July 1, 1997... INTRODUCTION Numerous studies in animals and humans have suggested that an essential function of sleep is the strengthening of memories (e.g., Cipolli, 1995; Dujardien, Guerrien, & Leconte, 1990). The sleep-dependent mechanisms underlying...

Parents of children with Asperger Syndrome: what is the cognitive phenotype?
July 1, 1997... INTRODUCTION Autism is diagnosed when a child fails to show normal social and communicative development, in combination with restricted development of imagination, and the presence of unusually repetitive behavior. Asperger Syndrome (AS) is...