Event Details

Tuesday, 15 May 2018 - Tuesday, 15 May 2018
11:00 am - 12:00 pm
QBI Level 7 Auditorium
UQ Location:
Queensland Brain Institute (St Lucia)
Event category(s):

Event Contact

Ms Deirdre Wilson
3346 6300
Org. Unit:
Queensland Brain Institute

Event Description

Full Description:
Anne Margarette Maallo
Queensland Brain Institute, University of Queensland

Title: 'Neural correlates of visual function in agenesis of the corpus callosum'

Abstract: An assault on the development of the corpus callosum in utero does not seem to have the same prominent effects on behaviour as those of surgical callosal section in adults. This makes dysgenesis of the corpus callosum (DCC) a good model for studying brain plasticity to understand how the brain compensates for abnormal development. Individuals with DCC have been shown to behave normally for tasks that require high-order processing and communication between the two cerebral hemispheres. In this study, I looked at low-level visual integration across two hemifields in adults with DCC and found deficits in interhemispheric processing in most participants that is expected in relation to the callosal pathology. However, they also exhibited intrahemispheric deficits when performing tasks concerning low-level visual features. I then looked at how the retinotopic maps in these individuals are organised. Functional aspects of retinotopic organisation present as typical, but its relation to anatomical landmarks are atypical that could be related to the behavioural deficits. I found no direct connection between the left and right functional primary visual cortex. Overall, the results indicate that there is a disconnection in DCC concerning low-level visual features. Going forward, these results can help us design better interventions for alleviating outcomes and lifestyle for individuals with DCC.

Directions to UQ

Google Map:
To St Lucia Campus, UQ Ipswich, and UQ Gatton.

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