One test of dichotic listening utilizing nonverbal stimuli is included on the VA-CD Tonal and Speech Materials for Auditory Perceptual Assessment, Disc 1.0. It is a test using three tone complexes that meet the definition of musical chords. The dichotic chords were included as a complement to the three dichotic speech procedures on the VA disc because musical chords may depend on right hemisphe...

The ventral anterior (VA) nucleus of the thalamus is connected with prefrontal and premotor cortices and with the basal ganglia. Although classically associated with motor functions, recent evidence implicates the basal ganglia in cognition and emotion as well. Here, we used two complementary approaches to investigate whether the VA is a key link for pathways underlying cognitive and emotional ...

This study seeks a better understanding of possible pathophysiological mechanisms associated with cognitive impairment and dementia in Parkinson's disease using structural functional MRI. We investigated resting-state connectivity important subdivisions the caudate nucleus, putamen thalamus, also how morphology these structures are impacted disorder. found cognitively unimpaired subjects (n = 3...

[3H]Thymidine autoradiography was used to investigate neurogenesis in all areas of the limbic cortex in the medial wall of the hemisphere. The experimental animals were the offspring of pregnant females injected with [3H]thymidine on 2 consecutive days: Embryonic Day (E)13-E14, E14-E15, ...E21-E22, respectively. On Postnatal Day (P)60, the proportion of neurons originating during 24-h periods w...

This study investigated the axonal projections of whisker-sensitive cells of the spinal trigeminal subnuclei (SP5) in rat oral, interpolar, and caudal divisions (SP5o, SP5i, and SP5c, respectively). The labeling of small groups of trigeminothalamic axons with biotinylated dextran amine disclosed the following classes of axons. 1) Few SP5o cells project to the thalamus: They innervate the caudal...

Cerebral small vessel disease is the most common cause of vascular cognitive impairment. It typically manifests with lacunar infarcts and ischaemic white matter lesions. However, little is known about how these lesions relate to the cognitive symptoms. Previous studies have found a poor correlation between the burden of ischaemic lesions and cognitive symptoms, thus leaving much of the variance...

Rabbits with bilateral transecting lesions of the mamillothalamic tract, control (tract-sparing and sham) lesions, or no lesions, and chronic, fixed-position anterior ventral (AV) and medial dorsal (MD) thalamic and posterodorsal subicular complex unit recording electrodes were trained to step in an activity wheel in response to a 0.5 sec tone (CS+) in order to avoid a brief foot shock. The rab...