Emeritus Professor Michael Charles Corballis

PhD (McGill), honorary LLD, FAPA, FAPS, FRSNZ, FAAAS

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Professor

Research | Current

Research interests

  • Cognitive neuroscience, including visual perception, visual imagery, attention and memory. My more specialised interests are in cerebral asymmetry of function and in how people recognise rotated shapes. I investigate these topics through the techniques of basic human experimental psychology, through brain imaging Electroencephalography (EEG) and Functional magnetic resonance imaging (fMRI), and through the study of individuals who have undergone section of the forebrain commissures.
  • Evolution of language, and in particular the theory that language evolved from manual gestures.

Research projects

  1. Processing of rotated shapes
    One of the problems of shape recognition is how people recognise shapes that have been rotated away from the upright. Our research suggests that people extract descriptions of shapes that are independent of their orientations, for example, when rotated shapes are presented in rapid sequence, people can usually name the shapes, but cannot tell their orientations. They appear also to be impervious to left-right sense of the shapes (eg, whether a letter such as R is normal or backward). Once identified, the orientation of the shape may then be determined, and only through a later process of mental rotation is its left-right sense established. We are investigating and refining our understanding of these processes both through experimental techniques and through the use of EEG and fMRI to determine which areas in the brain are involved.
  2. Interhemispheric integration in the split brain
    Individuals who have undergone section of the corpus callosum (usually for the relief of intractable epilepsy) generally show functional disconnection between the two sides of visual space. There are, however, some exceptions. Our research has shown some low-level visual interactions between the disconnected hemispheres and we are further exploring their nature through the study of several split-brained patients in Italy. This provides insight into the role of subcortical structures in vision.
  3. Evolution of language
    Arising from my interest in the connection between handedness and cerebral asymmetry for language, I have developed an old idea that language evolved from manual gestures rather than from animal calls. This idea is supported by studies of the role of manual gesture in normal speech, by investigations of signed languages developed by deaf communities, by attempts to reach language to nonhuman primates and by evidence that the homologues of the speech areas in nonhuman primates has to go with manual action rather than with vocalisation. My current endeavour is to provide a plausible account of how the transition might have occurred, based on the premise that speech itself is a gestural system rather than an acoustic one.
  4. Cerebral asymmetry in twins
    This project uses magnetic resonance imaging (MRI) to examine functional and structural asymmetries in twins. A particular focus of interest is on identical twins of opposite handedness (so-called “mirror twins”), who comprise some 22% of the population of identical twins. The question is whether they also show mirroring of various indices of cerebral asymmetry. This project is supported by a Marsden grant, and is also providing general information about the interrelations between handedness and both structural and functional asymmetries.

 

Areas of expertise

  • General experimental psychology

Selected publications and creative works (Research Outputs)

  • Corballis, M. C. (2015). Book review: The origins of language: a slim guide. Journal of Multilingula and Multicultural Development, 37 (4), 439-441. 10.1080/01434632.2015.1108019
    URL: http://hdl.handle.net/2292/28792
  • S Häberling I, & Corballis, M. C. (2015). Cerebellar asymmetry, cortical asymmetry and handedness: Two independent networks. Laterality, 1-18. 10.1080/1357650X.2015.1110161
  • Häberling IS, Steinemann, A., & Corballis, M. C. (2015). Cerebral asymmetry for language: Comparing production with comprehension. Neuropsychologia10.1016/j.neuropsychologia.2015.11.002
    Other University of Auckland co-authors: Isabelle Haberling
  • Corballis, M. C. (2015). What's left in language? Beyond the classical model. Annals of the New York Academy of Sciences10.1111/nyas.12761
  • Corballis, M. C. (2015). Mirror Neurons, Theory of. In J. Wright (Ed.) International Encyclopedia of the Social & Behavioral Sciences (pp. 582-588). Oxford: Elsevier.
  • Lyons, A. D., Henry, J. D., Rendell, P. G., Corballis, M. C., & Suddendorf, T. (2014). Episodic Foresight and Aging. Psychol Aging10.1037/a0038130
  • Corballis, M. C. (27/7/2014). Mind wandering: Mental time travel, theory of mind, and language. Paper presented at 12th International Conference of Cognitive Neuroscience (ICON), Brisbane, Australia. 27 July - 31 July 2014.
  • Corballis, M. C. (2014). Cerebral hemispheric interactions. In M. J. Aminoff, R. B. Daroff (Eds.) Encyclopedia of the neurological sciences (pp. 674-677). Oxford: Academic Press. 10.1016/B978-0-12-385157-4.01133-7
    URL: http://hdl.handle.net/2292/22440

Contact details

  • Media Contact

Primary location

HUMAN SCIENCES BUILDING - EAST - Bldg 201E
Level 5 , Room 537
10 SYMONDS ST
AUCKLAND 1010
New Zealand