Regional cerebral blood flow patterns related to verification of low- and high-imagery sentences.
Although several SPECT studies have shown left inferior occipital activation with visual imagery, the reliability of this finding remains doubtful. The present study replicated two conditions of a previous SPECT-study exploring rCBF in subjects verifying the correctness of low- and high-imagery sentences. As in the previous study, verification of high-imagery sentences was associated with higher flow rates in the left inferior occipital region and lower flow rates in the right anterior frontal region. By contrast, a bilateral increase of thalamic flow rates with imagery was not replicated, and there was a higher flow rate in the left inferior temporal region with low-imagery sentences which had not been found in the original study.
Goldenberg
G
G
Neurologische Universitätsklinik, Wien, Austria.
Steiner
M
M
Podreka
I
I
Deecke
L
L
D000328:Adult; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000098:blood supply*; D003118:Color Perception / Q000502:physiology; D004292:Dominance, Cerebral / Q000502:physiology; D005260:Female; D006801:Humans; D007092:Imagination / Q000502:physiology*; D008297:Male; D009778:Occipital Lobe / Q000098:blood supply; D011932:Reading; D012039:Regional Blood Flow / Q000502:physiology; D015899:Tomography, Emission-Computed, Single-Photon; D014796:Visual Perception / Q000502:physiology*