Research Interests

Our research investigates the cognitive and brain mechanisms responsible for the subjective experience of remembering, and how we use mental experiences to make sense of the world, helping us to keep a grip on reality.

This work involves inter-relating cognitive hypotheses with evidence from functional neuroimaging of healthy volunteers and from examining the effects of neurological and psychiatric disorders, and normal aging, on memory abilities.

Research in the laboratory uses a number of methods, including behavioural measures, functional and structural neuroimaging (fMRI/sMRI), electrophysiology (EEG/MEG), and brain stimulation (TMS/tDCS).

Anterior prefrontal cortex activity during studies of reality monitoring

One topic of interest is the interaction between anterior prefrontal cortex and other regions within the frontal lobes, and how these areas are involved in the strategic control of recollection. Anterior prefrontal cortex appears to be key for making decisions about our memories, such as distinguishing real experiences from events we may have imagined or been told about by someone else (termed 'reality monitoring'). Recent findings include the observation that structural variability in an anterior prefrontal cortex brain fold called the paracingulate sulcus might underlie individual differences in reality monitoring that are seen in the general population, and might explain the hallucinations often associated with conditions such as schizophrenia.

Angular gyrus is involved in integrating multimodal memory features

A further major focus is whether these and other brain regions play a necessary role in memory. For example, we have recently been investigating the human parietal lobe, which is commonly activated during neuroimaging studies of memory but which lesion studies indicate may not be critical for accurate recollection to occur. Our hypothesis to explain this conundrum is that the parietal lobe plays a role in the subjective experience of remembering, integrating multimodal event features within a first-person perspective and contributing to the richness and precision of memories, and thus one's confidence in what one is remembering.

See full list of publications.