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Activation of auditory cortex during silent lipreading.
Three experiments suggest that these auditory cortical areas are not engaged when an individual is viewing nonlinguistic facial movements but appear to be activated by silent meaningless speechlike movements (pseudospeech), which supports psycholinguistic evidence that seen speech influences the perception of heard speech at a prelexical stage.
Detection of Audio-Visual Integration Sites in Humans by Application of Electrophysiological Criteria to the BOLD Effect
The efficacy of using an analytic approach informed by electrophysiology to identify multisensory integration sites in humans is demonstrated and the particular network of brain areas implicated in these crossmodal integrative processes are suggested to be dependent on the nature of the correspondence between the different sensory inputs.
Amphetamine and apomorphine responses in the rat following 6-OHDA lesions of the nucleus accumbens septi and corpus striatum
Perseverative interference in monkeys following selective lesions of the inferior prefrontal convexity
Monkeys with lesions of the inferior frontal convexity were impaired relative to controls in retaining an auditory frequency differentiation and in learning object and spatial reversals.
Sustained attention deficit in bipolar disorder.
- L. Clark, S. Iversen, G. Goodwin
- Psychology, MedicineThe British journal of psychiatry : the journal…
- 1 April 2002
Sustained attention deficit may represent a neuropsychological vulnerability marker for bipolar disorder, providing a focus for further understanding of the phenotype and analysis of the neuronal networks involved.
Response amplification in sensory-specific cortices during crossmodal binding.
- G. Calvert, M. Brammer, E. Bullmore, R. Campbell, S. Iversen, A. David
- Psychology, BiologyNeuroReport
- 20 August 1999
FMRI data suggest that the perceptual improvements effected by synthesizing matched multisensory inputs are realised by reciprocal amplification of the signal intensity in participating unimodal cortices.
- S. Iversen
- EngineeringClinical Neurophysiology
- 31 August 2000
Double dissociation of function within the hippocampus: a comparison of dorsal, ventral, and complete hippocampal cytotoxic lesions.
- D. Bannerman, B. Yee, M. Good, M. J. Heupel, S. Iversen, J. Rawlins
- Biology, PsychologyBehavioral Neuroscience
- 1 December 1999
Rats with complete cytotoxic hippocampal lesions exhibited spatial memory impairments in both the water maze and elevated T maze and were less efficient on a nonspatial, differential reinforcement of low rates (DRL) task.
Dopamine: 50 years in perspective