The inferior longitudinal fasciculus is a long association bundle running along the lower and lateral walls of the temporal and occipital horns of the lateral ventricle. It connects the occipital visual cortex with the anterior temporal lobe. It carries the ventral visual stream, the 'what' pathway.
| Location | Lateral and inferior wall of the temporal and occipital horns of the lateral ventricle |
|---|---|
| Connections |
|
| Blood Supply | Posterior cerebral artery; Middle cerebral artery |
Links visual areas with temporal lobe memory and emotion centres for recognising objects, faces and words.
Damage can disconnect seeing from recognising, leading to visual agnosia, prosopagnosia or difficulty reading. It may be injured during temporal lobe epilepsy surgery. Reduced integrity has been described in developmental prosopagnosia and some dementias.
Failure to recognise seen objects when visual cortex is disconnected from temporal memory stores.
Inability to recognise familiar faces linked to damage of the ventral visual stream.
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