Irish works on the loss of empathy during dementia. She says she is "interested in how we remember the past and imagine the future. The relative frequency and ease with which we engage in those forms of thought belies their incredible complexity." Her career has explored how memory and imagination are changed during neurological conditions including Alzheimer’s disease. She has been awarded both Discovery Early Career Researcher and Future Fellow awards from the ARC. Irish's work on neuropsychology has been discussed on the ABC and her experiences of the L'Oreal Rising Talent award were described in Nature Jobs.
Irish has given science communication talks on the importance of day dreaming.
Irish has advocated for diversity in science on many platforms, and she "is committed to the promotion and retention of women in science". She was named as one of the inaugural 30 ‘Superstars of STEM’, part of a growing movement with the goal of providing positive role models to young girls and minorities to pursue a career in science. Irish is one of a growing number of academic women in STEM who are committed to retaining women in science.
Irish has received a number of international awards.
"Dr Muireann Irish, cognitive neuroscientist, Neuroscience Research Australia/UNSW, Sydney". www.forwomeninscience.com.au. Retrieved 15 August 2019. https://www.forwomeninscience.com.au/news/dr-muireann-irish-cognitive-neuroscientist-neuroscience-research-australia-unsw-sydney
"Young Investigator Award". Cognitive Neuroscience Society. Retrieved 15 August 2019. https://www.cogneurosociety.org/young-investigator-award/
"Dr Muireann Irish". AIPS. Retrieved 15 August 2019. https://www.aips.net.au/AIPS-retired/tall-poppies/nsw-tall-poppies/past-nsw-tall-poppy-winners/2014-nsw-award-winners/dr-muireann-irish/
"Reflections on the L'Oreal-UNESCO For Women in Science program : Naturejobs Blog". blogs.nature.com. Retrieved 15 August 2019. http://blogs.nature.com/naturejobs/2017/06/16/reflections-on-the-loreal-unesco-for-women-in-science-program/
"The enigma of time". Radio National. 28 September 2018. Retrieved 15 August 2019. https://www.abc.net.au/radionational/programs/allinthemind/the-enigma-of-time-repeat/10266928
"Reflections on the L'Oreal-UNESCO For Women in Science program : Naturejobs Blog". blogs.nature.com. Retrieved 15 August 2019. http://blogs.nature.com/naturejobs/2017/06/16/reflections-on-the-loreal-unesco-for-women-in-science-program/
"Muireann Irish". Raising the bar. Retrieved 16 August 2019. http://www.rtbevent.com/muireann-irish
Australia, Women in STEMM (7 March 2018). "STEMM Profile: Associate Professor Muireann Irish | ARC Future Fellow | Brain and Mind Centre and School of Psychology | The University of Sydney | Sydney | NSW". Women in STEMM Australia. Retrieved 15 August 2019. https://womeninscienceaust.org/portfolio/stemm-profile-associate-professor-muireann-irish-arc-future-fellow-brain-and-mind-centre-and-school-of-psychology-the-university-of-sydney-sydney-nsw/
"Reflections on the L'Oreal-UNESCO For Women in Science program : Naturejobs Blog". blogs.nature.com. Retrieved 15 August 2019. http://blogs.nature.com/naturejobs/2017/06/16/reflections-on-the-loreal-unesco-for-women-in-science-program/
"Reflections on the L'Oreal-UNESCO For Women in Science program : Naturejobs Blog". blogs.nature.com. Retrieved 15 August 2019. http://blogs.nature.com/naturejobs/2017/06/16/reflections-on-the-loreal-unesco-for-women-in-science-program/
"Australian Academy of Science". www.science.org.au. https://www.science.org.au/supporting-science/awards-and-opportunities/gottschalk-medal
"Young Investigator Award – Cognitive Neuroscience Society". Cognitive Neuroscience Society. Retrieved 15 August 2019. https://www.cogneurosociety.org/young-investigator-award/
"Sydney neuroscientist honoured by the British Neuropsychological Society". The University of Sydney. Retrieved 15 August 2019. https://sydney.edu.au/science/news-and-events/2019/04/30/sydney-neuroscientist-honoured-by-british-neuropsychological-society.html
Australia, Women in STEMM (7 March 2018). "STEMM Profile: Associate Professor Muireann Irish | ARC Future Fellow | Brain and Mind Centre and School of Psychology | The University of Sydney | Sydney | NSW". Women in STEMM Australia. Retrieved 15 August 2019. https://womeninscienceaust.org/portfolio/stemm-profile-associate-professor-muireann-irish-arc-future-fellow-brain-and-mind-centre-and-school-of-psychology-the-university-of-sydney-sydney-nsw/
"2017 Superstars of STEM Archives". Science and Technology Australia. Retrieved 15 August 2019. https://scienceandtechnologyaustralia.org.au/list/2017-superstars/
"Associate Professor Muireann Irish". Science and Technology Australia. Retrieved 15 August 2019. https://scienceandtechnologyaustralia.org.au/profile/aprof-muireann-irish/
"Dr Muireann Irish, cognitive neuroscientist, Neuroscience Research Australia/UNSW, Sydney". www.forwomeninscience.com.au. Retrieved 15 August 2019. https://www.forwomeninscience.com.au/news/dr-muireann-irish-cognitive-neuroscientist-neuroscience-research-australia-unsw-sydney
Schoenfeld, Davis. "Laird S. Cermak Award Recipients". The International Neuropsychological Society. Retrieved 15 August 2019. https://www.the-ins.org/about-ins/ins-awards/laird-s-cermak-award-recipients/
"Fellows - The Royal Society of NSW". www.royalsoc.org.au. Retrieved 1 October 2019. https://www.royalsoc.org.au/about-us/fellows
"The Academy of the Social Sciences in Australia welcomes 21 new Fellows". Academy of the Social Sciences in Australia. 8 November 2023. Retrieved 23 November 2023. https://socialsciences.org.au/news/celebrating-excellence-21-new-fellows-inducted-into-the-academy-of-the-social-sciences-in-australia/
"Muireann Irish". The Conversation. Retrieved 16 August 2019. https://theconversation.com/profiles/muireann-irish-104604
Irish, Muireann; Ahmed, Rebekah. "Still Alice: a rare look at how dementia steals memories from millions". The Conversation. Retrieved 16 August 2019. https://theconversation.com/still-alice-a-rare-look-at-how-dementia-steals-memories-from-millions-36421
O'Callaghan, Claire; Irish, Muireann. "How did it get so late so soon? Why time flies as we get older". The Conversation. Retrieved 16 August 2019. https://theconversation.com/how-did-it-get-so-late-so-soon-why-time-flies-as-we-get-older-44296
Irish, Muireann. "Daydream believer: why your brain is wired to wander". The Conversation. Retrieved 16 August 2019. https://theconversation.com/daydream-believer-why-your-brain-is-wired-to-wander-18881
Hermant, ABC News: Norman (11 March 2018). "Dr Muireann Irish with her team". ABC News. Retrieved 16 August 2019. https://www.abc.net.au/news/2018-03-11/dr-muireann-irish-with-her-team/9523190
Australia, Dementia (6 February 2018). "Muireann Irish". www.dementia.org.au. Retrieved 16 August 2019. https://www.dementia.org.au/research/our-researchers/muireann-irish
"Cognitive Neuroscientist & Superstar of STEM | Muireann Irish". Careers with STEM. Retrieved 16 August 2019. https://careerswithstem.com.au/profiles/cognitive-neuroscientist/