高清福利片

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Visual neuroscience

Improving our understanding of visual processes
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The way in which nerve cells are connected to create vision is poorly understood.

高清福利片ers work towards improving our understanding of how the eye and brain process visual scenes to perceive colour, form and movement.

Through our work, we gain knowledge that can be used in clinical practice and the treatment of eye disease.

Research areas

Linking the eye to the brain

It is known that nerve signals serving the sense of sight travel from the eye to the brain on the processes of retinal ganglion cells (retina output neurones).

These cells send specific information about colour, shape and movement of objects in our visual field. We study this process by analysing the fine pattern of nerve cell connections in the retina which generate these visual channels, and by identifying how the cells that contribute to each channel are distributed across the retina.

  • Analysis of thorny ganglion cells in primate retina: In 2024 we showed that a group of ganglion cells called thorny cells send signals to form- and motion- detecting signals in marmosets; these cells remain poorly understood but may signal the direction of motion of a rapidly moving objects such a an expertly-hit tennis ball.聽
  • Key paper: Lee et. al, 2024: ""
  • 笔谤辞蹿别蝉蝉辞谤听
  • Associate Professor
  • Ms

Connectomic reconstruction of the human fovea

This project is an International collaboration with Prof. Dennis Dacey and Dr Yeon Jin Kim at the University of Seattle, USA. The aim of our project is to construct a 鈥渃ircuit diagram鈥 of the fovea, which is the part of the retina that enables fine-grain vision for critical tasks such as reading.

Artificial intelligence-guided image reconstruction: We have now used artificial intelligence-guided image reconstruction to classify and count all neurones and glial cells within 500 碌m (0.5 mm) of the foveal centre and are now analysing the connections (synapses) between foveal cells

  • 笔谤辞蹿别蝉蝉辞谤听
  • Associate Professor

Effect of brain lesions on the retina

This project is a collaboration with Prof Marcello Rosa and Dr Nafiseh Atapour at Monash University. It is known that the retina and optic nerve can degenerate following brain damage.

In this project we found that in marmoset this process, called transynaptic degeneration, is critically dependent on the age at time of lesion, with resilience to cortical lesions rising very rapidly in the first three postnatal weeks.

Key paper: Sepehrisadr et al., ""

  • 笔谤辞蹿别蝉蝉辞谤听
  • Associate Professor
  • 惭蝉听

Contact us

Mailing address
South Block, Sydney Eye Hospital
8 Macquarie Street
Sydney, NSW 2000