Human visual motion areas determined individually by magnetoencephalography and 3D magnetic resonance imaging

Bundo, Masahiko; Kaneoke, Yoshiki; Inao, Suguru; Yoshida, Jun; Nakamura, Akinori; Kakigi, Ryusuke

doi:10.1002/1097-0193(200009)11:1<33::aid-hbm30>3.0.co;2-c

Cited by 60 publications

(9 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The activation of the right human temporal cortex during NEAR ⁄ FAR, as contrasted with constant fixation, is consistent with neurophysiologic studies in the phylogenetically translated feline (Westheimer & Blair, 1974;Bando et al, 1984a,b;Toyama et al, 1986;Bando & Toda, 1991;Sawa et al, 1992) and the non-human primate (Jampel, 1960;Watson et al, 1993;Gnadt & Mays, 1995;Bundo et al, 2000;Takemura et al, 2001;Hagen et al, 2002) as well as with PET studies in healthy human subjects.…”

Section: Temporal Lobe Involvement In Nfrsupporting

confidence: 81%

“…Such a signal may in some subjects have provided an odd-error signal of defocus and thereby helped in encoding the third dimension, in driving and ⁄ or in facilitating in the programming and posturing of the eye-lens movements (Zeki, 1974a;Nakayama, 1985;McLin et al, 1988;Takemura et al, 2001). The BA 37 activation appears adjacent and overlapping, but not identical to, the reported location of human V5 complex (Watson et al, 1993;Zeki, 1974b;Maunsell & Van Essen, 1983a,b;Zihl et al, 1983;Zeki, 1991;Watson et al, 1993;Tootell et al, 1995;Bundo et al, 2000;Hagen et al, 2002;Ffytche et al, 1995).…”

Section: Temporal Lobe Involvement In Nfrmentioning

confidence: 94%

See 1 more Smart Citation

Functional neuroanatomy of the human near/far response to blur cues: eye‐lens accommodation/vergence to point targets varying in depth

Richter

Costello

Sponheim

et al. 2004

Eur J of Neuroscience

View full text Add to dashboard Cite

The purpose of this study was to identify the networks involved in the regulation of visual accommodation/vergence by contrasting the cortical functions subservient to eye-lens accommodation with those evoked by foveal fixation. Neural activity was assessed in normal volunteers by changes in rCBF measured with PET. Thirteen right-handed subjects participated in three monocular tasks: (i) resting with eyes closed; (ii) sustained foveal fixation upon a LED at 1.2 m (0.83 D); and (iii) accommodating alternately on a near (24 cm, 4.16 D) vs. a far (3.0 m, 0.33 D) LED alternately illuminated in sequential 2 s epochs. The contrast between the conditions of near/far accommodation and of constant foveal fixation revealed activation in cerebellar hemispheres and vermis; middle and inferior temporal cortex (BA 20, 21, 37); striate cortex and associative visual areas (BA 17/18). Comparison of the condition of constant fixation with the condition of resting with closed eyes indicated activation of cerebellar hemispheres and vermis; visual cortices (BA 17/18); a right hemisphere dominant network encompassing prefrontal (BA 6, 9, 47), superior parietal (BA 7), and superior temporal (BA 40) cortices; and bilateral thalamus. The contrast between the conditions of near/far accommodation with closed-eye rest reflected an incremental summation of the activations found in the previous comparisons (i.e. activations associated with constant fixation). Neural circuits activated selectively during the near/far response to blur cues over those during constant visual fixation, occupy posterior structures that include occipital visual regions, cerebellar hemispheres and vermis, and temporal cortex.

show abstract

Section: Temporal Lobe Involvement In Nfrsupporting

confidence: 81%

Section: Temporal Lobe Involvement In Nfrmentioning

confidence: 94%

Functional neuroanatomy of the human near/far response to blur cues: eye‐lens accommodation/vergence to point targets varying in depth

Richter

Costello

Sponheim

et al. 2004

Eur J of Neuroscience

View full text Add to dashboard Cite

show abstract

“…A number of imaging studies have found signi®cant interindividual variability in the location of hMT/V5 (Watson et al, 1993;Bundo et al, 2000;Dumoulin et al, 2000). To compensate for the variability in the functional anatomy, which cannot be corrected by spatial averaging, a region of interest (ROI) analysis was used.…”

Section: Discussionmentioning

confidence: 99%

“…Through the use of PET Watson et al, 1993), fMRI (Tootell et al, 1995b), and anatomical markers (Tootell & Taylor, 1995) the human homologue, hMT/V5, has been localized to a region of temporal-occipital cortex near the inferior temporal sulcus. However, the exact location of hMT/V5 shows a marked amount of variability between individuals (Watson et al, 1993;Bundo et al, 2000;Dumoulin et al, 2000). Like the monkey homologue, hMT/V5 shows selective activation with visual motion, and damage encompassing this region produces de®cits in the processing of moving visual stimuli (Zihl et al, 1983(Zihl et al, , 1991Zeki, 1991).…”

Section: Introductionmentioning

confidence: 99%

Tactile motion activates the human middle temporal/V5 (MT/V5) complex

Hagen

Franzén

McGlone

et al. 2002

Eur J of Neuroscience

235

140

View full text Add to dashboard Cite

The human middle temporal/V5 complex (hMT/V5) plays a central role in the perception of visual motion. This region is considered a unimodal visual area with little direct involvement of other sensory modalities. The current study uses H215O PET to test whether tactile motion influences the activity of hMT/V5. Regional cerebral blood flow (rCBF) within hMT/V5 was estimated in eight subjects in separate tactile motion and visual motion conditions, each contrasted with a resting, control. The tactile motion condition involved a brush stroked proximal-to-distal along the volar forearm and palm, while the subject attended to the stimulus with closed eyes. The visual motion condition consisted of low contrast, grey-scale rings radiating at 15 degrees /s from a central point, upon which the subject was instructed to fixate. The location of hMT/V5 was defined for each subject separately as the local maximum of rCBF change during the visual motion condition (vs. control). The average change in rCBF within spherical regions of interest at each peak revealed significant bilateral activation of hMT/V5 in the tactile motion condition contrasted with a second, independent set of control scans. Additionally, a single subject received a sufficient number of scans to perform a pixel-wise, within-subject analysis. His functional images were coregistered to his anatomical MRI. In this subject, tactile motion produced a significant increase in rCBF that directly overlapped a region activated by visual motion at the posterior continuance of the inferior temporal sulcus, consistent with the known location of hMT/V5. These results suggest involvement of the hMT/V5 complex in tactile motion processing.

show abstract

“…For this objective, we used apparent motion, which is perceived by the same mechanism as real motion. [37][38][39][40]…”

Section: Cortical Processing By Viewing Mouth and Eye Movements Intromentioning

confidence: 99%

Mechanisms of face perception in humans: A magneto‐ and electro‐encephalographic study

2005

Self Cite

View full text Add to dashboard Cite

We have been studying the underlying mechanisms of face perception in humans using magneto- (MEG) and electro-encephalography (EEG) including (1) perception by viewing the static face, (2) differences in perception by viewing the eyes and whole face, (3) the face inversion effect, (4) the effect of gaze direction, (5) perception of eye motion, (6) perception of mouth motion, and (7) the interaction between auditory and visual stimuli related to the vowel sounds. In this review article, we mainly summarize our results obtained on 3, 5, and 6 above. With the presentation of both upright and inverted unfamiliar faces, the inferior temporal cortex (IT) centered on the fusiform gyrus, and the lateral temporal cortex (LT) near the superior temporal sulcus were activated simultaneously, but independently, between 140 and 200 ms post-stimulus. The right hemisphere IT and LT were both active in all subjects, and those in the left hemisphere in half of the subjects. Latencies with inverted faces relative to those with upright faces were longer in the right hemisphere, and shorter in the left hemisphere. Since the activated regions under upright and those under inverted face stimuli did not show a significant difference, we consider that differences in processing upright versus inverted faces are attributable to temporal processing differences rather than to processing of information by different brain regions. When viewing the motion of the mouth and eyes, a large clear MEG component, 1M (mean peak latency of approximately 160 ms), was elicited to both mouth and eye movement, and was generated mainly in the occipito-temporal border, at human MT/V5. The 1M to mouth movement and the 1M to eye movement showed no significant difference in amplitude or generator location. Therefore, our results indicate that human MT/V5 is active in the perception of both mouth and eye motion, and that the perception of movement of facial parts is probably processed similarly.

show abstract

Human visual motion areas determined individually by magnetoencephalography and 3D magnetic resonance imaging

Cited by 60 publications

References 62 publications

Functional neuroanatomy of the human near/far response to blur cues: eye‐lens accommodation/vergence to point targets varying in depth

Functional neuroanatomy of the human near/far response to blur cues: eye‐lens accommodation/vergence to point targets varying in depth

Tactile motion activates the human middle temporal/V5 (MT/V5) complex

Mechanisms of face perception in humans: A magneto‐ and electro‐encephalographic study

Contact Info

Product

Resources

About