Corpora quadrigemina

Last revised by Dr Calum Worsley on 01 Jul 2021

The corpora quadrigemina (Latin for "quadruplet bodies", singular: corpus quadrigeminum) are the four colliculi, two inferior and two superior, that sit on the quadrigeminal plate on the posterior surface of the midbrain.

The corpora quadrigemina are reflex centers involving vision and hearing:

Both colliculi also have descending projections to the paramedian pontine reticular formation and spinal cord, and thus can be involved in responses to stimuli faster than cortical processing would allow.

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Cases and figures

  • Case 1a: labeled 30 (inferior) and 51 (superior)
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  • Case 1b: labeled 40
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  • Case 2: labeled in pink (inferior)
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  • Figure 1: Gray's anatomy illustration
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  • Figure 2: midbrain (axial)
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  • Figure 3: midbrain (axial)
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  • Figure 4: brainstem dissection (posterior view)
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  • Figure 5: brainstem - Gray's anatomy illustrations
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  • Figure 6: brainstem: dorsal - Gray's anatomy illustration
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  • Figure 7: brain (sagittal section)
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  • Figure 8: interconnection of cranial nerve nuclei (Gray's illustration)
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