Journal of Cognitive Neuroscience articles from March 1999

Journal of Cognitive Neuroscience archives from March 1999

Neural basis of endogenous and exogenous spatial orienting: a functional MRI study.(magnetic resonance imaging)
March 1, 1999... INTRODUCTION Attention to a location in space may vary depending on whether a peripheral target appears with or without warning (Jonides, 1981; Posner, 1980; Posner & Cohen, 1984; Posner, Walker, Friedrich, & Rafal, 1987). Internally...

Categorical and metric spatial processes distinguished by task demands and practice.
March 1, 1999... INTRODUCTION Kosslyn and his colleagues have proposed that there are two independent modes of processing spatial relationships, categorical and metric (sometimes referred to as coordinate), that rely on distinct neural substrates. As...

A neural network model of lateralization during letter identification.
March 1, 1999... INTRODUCTION Both clinical and experimental research indicate that the left and right cerebral hemispheres in humans are specialized for processing certain types of information.(1) For example, well-known behavioral asymmetries in humans...

Sleep-induced changes in associative memory.
March 1, 1999... INTRODUCTION Sleep, especially REM sleep, provides an exceptional opportunity to study the brain basis of cognitive processes. As one proceeds from waking into nonREM (NREM) and then REM sleep, a series of dramatic and well-defined changes...

Electrophysiological evidence for two steps in syntactic analysis: early automatic and late controlled processes.
March 1, 1999... INTRODUCTION Comprehending sentences involves a variety of subprocesses computed in a restricted amount of time. Therefore models attempting to give a plausible description of language comprehension not only have to isolate the necessary...

Saccadic performance as a function of the presence and disappearance of auditory and visual fixation stimuli.
March 1, 1999... INTRODUCTION Saccadic latencies are facilitated when a fixated visual stimulus is extinguished simultaneously with (step) or prior to (gap) the appearance of a peripheral visual target (e.g., Fischer & Ramsperger, 1984; Saslow, 1967)....

Spatial S-R compatibility with centrally presented stimuli: an event-related asymmetry study on dimensional overlap.(stimulus-response compatibility)
March 1, 1999... INTRODUCTION The present study was intended to elucidate the mechanisms by which spatial information affects manual response times when spatial information is delivered by centrally presented symbolic stimuli. Lateral presentation of...

Interview with Jon Kaas.(neurophysiologist)(Interview)
March 1, 1999... JOCN: Over the years, you have been one the founding participants of studying cortical mechanisms from both an anatomical and physiologic point of view. You have extensively studied the sensory and motor cortical maps of dozens of different...