Tom Johnstone

I am undertaking research into the neural basis of emotion and cognition at the W.M. Keck Laboratory for Functional Brain Imaging and Behavior. My research focuses on understanding the interaction between cognitive and affective processes using fMRI in conjunction with cognitive experimental techniques. I am also involved in two longitudinal studies of the neural changes associated with treatment of Generalized Anxiety Disorder and Depression.

 

My methodological research entails the development of efficient experimental designs and analysis procedures for a large variety of different FMRI experiments in the WM Keck Laboratory. In connection with ongoing longitudinal studies of affective disorders, I am studying the test-retest reliability of FMRI measures of brain activation over extended periods. I am a co-investigator on an NIMH-funded project to compare and quantify the function and performance the most widely used software packages for FMRI data analysis (click here to see a PDF of the presentation made at the NIMH in May 2003). This project included the collection of a database of FMRI data from 40 experimental participants performing a number of different affective and cognitive tasks.

Contact Information

·         e-mail : itjohnstone@facstaff.wisc.edu

·         snail-mail : W.M. Keck Laboratory for Functional Brain Imaging and Behavior, Waisman Center, 1500 Highland Avenue, Madison, WI, 53705.

·         tel : +1 608 263 2743

·         fax : +1 608 265 8737

Research Interests

·         Expression and communication of emotion in human speech

·         FMRI experimental design, signal processing and data analysis techniques

·         Cognition and emotion interaction

·         Speech signal analysis tailored to psychological research on nonlinguistic aspects of speech and voice

Some software bits and pieces

·         afnigui this is a simple interface for configuring some common AFNI commands

Technical Reports and Workshop Notes (warning: these are constantly being updated and reworked)

·         Comparison of jittered 1-second estimates of haemodynamic responses with actual 1 second measured responses

·         Tutorial notes and examples on E-Prime experimental control software

·         AFNI processing part I: Tutorial notes from Brain Imaging Workshop

·         GLM in fMRI data analysis (Powerpoint presentation)

Publications & presentations

Edited Book

Scherer, K. R., Schorr, A., & Johnstone, T. (2001). Appraisal processes in emotion: Theory, Methods, Research. New York: Oxford University Press.

Book Chapters

Scherer, K. R., Johnstone, T. & Klasmeyer, G. (2003). Vocal expression of emotion. In R. J. Davidson, H. Goldsmith, K. R. Scherer (Eds.). Handbook of the Affective Sciences (pp. 433-456). New York: Oxford University Press.

Johnstone, T., vanReekum, C. M., & Scherer, K. R. (2001).Vocal correlates of appraisal processes. In K.R. Scherer, A. Schorr, & T. Johnstone (Eds.). Appraisal processes in emotion: Theory, Methods, Research (pp. 271-284). New York: Oxford University Press.

Johnstone, T. & Scherer, K. R. (2000). Vocal Communication of Emotion. In M. Lewis & J. Haviland (Eds.). Handbook of Emotion, Second Edition (pp. 220-235). New York: Guilford Press.

Articles

Somerville, L. H., Kim, H., Johnstone, T., Alexander, A., & Whalen, P. J. (2004). Human amygdala response during presentation of happy and neutral faces: Correlations with state anxiety. Biological Psychiatry, 55, 897-903.

Kim, H., Somerville, L. H., Johnstone, T., Alexander, A., & Whalen, P. J. (2004). Inverse amygdala and medial prefrontal cortex responses to surprised faces. Neuroreport, 14, 2317-2322.

van Reekum, C. M., Johnstone, T., Banse, R., Etter, A., Wehrle, T., & Scherer, K. R. (in press). Psychophysiological Responses to Appraisal Dimensions in a Computer Game, Cognition and Emotion.

Kim, H., Somerville, L. H., McClean, A. A., Johnstone, T., Shin, L. M., & Whalen, P. J. (2003). Functional MRI Responses of the Human Dorsal Amygdala/Substantia Innominata Region to Facial Expressions of Emotion. Ann. N.Y. Acad. Sci., 985, 533-535.

Karlsson, I., Bänziger, T., Dankovicová, J., Johnstone, T., Lindberg, J., Melin, H., Nolan, F., & Scherer, K.R. (2000). Speaker verification with elicited speaking-styles. Speech Communication, 31, 121-129.

Conference Presentations

Johnstone, T., Somerville, L. H., Nitschke, J. B., Alexander, A. L., Davidson, R. J., Kalin, N. H., Whalen, P. J. (2003). Stability of Amygdala Response to Fearful Faces over Multiple Scan Sessions. Presented at the 9th Annual Meeting of the Organization for Human Brain Mapping, New York.

Somerville, L. H., Kim, H., McLaren, D. G., Johnstone, T., Whalen, P. J. (2003). State Anxiety Correlates with Human Amygdala Response During Presentation of Happy and Neutral Faces. Presented at the 9th Annual Meeting of the Organization for Human Brain Mapping, New York.

Johnstone, T., Whalen, P. J., Nitschke, J. B., Somerville, L. H., Ihde-Scholl, T., Tarleton, L. C., Seman, L. M., Davidson, R. J., & Kalin, N. H. (2002). Amygdala activation to fearful facial expressions in generalized anxiety disorder (GAD). Presented at the 32nd Annual Meeting of the Society for Neuroscience, Orlando.

Kim, J. H., Somerville, L. H., McLean, A. A., Johnstone, T., Shin, L. M., & Whalen, P. J (2002). Functional MRI responses of the human dorsal and ventral amygdaloid regions to facial expressions of emotion. Presented at the 32nd Annual Meeting of the Society for Neuroscience, Orlando.

Schaefer, H. S., Larson, C. L., Johnstone, T., Davidson, R. J. (2002). Overlapping yet distinct networks implicated in normal versus pathological human fear. Presented at the 32nd Annual Meeting of the Society for Neuroscience, Orlando.

Nitschke, J. B., Johnstone, T., Possin, A. A., Mackiewicz, K. L., Somerville, L. H., Schaefer, H. S., Whalen, P. J., Seman, L. M., Kalin, N. H., & Davidson, R. J. (2002). Altered fMRI responses to the anticipation of and exposure to aversion in generalized anxiety disorder. Presented at the 32nd Annual Meeting of the Society for Neuroscience, Orlando.

Johnstone, T. & Scherer, K. R. (2000). Acoustic analysis of experimentally induced emotional speech. Proceedings of the XIth conference of the International Society for Research in Emotions, Québec.

Johnstone, T. & Scherer, K.R. (2000). The effects of emotion on physiology and voice. Presented at the 40th Annual Meeting of the Society for Psychophysiological Research, San Diego.

Scherer, K. R., Johnstone, T., Klasmeyer, G., & Bänziger, T. (2000).Can automatic speaker verification be improved by training the algorithms on emotional speech? Proceedings of the 6th International Conference on Spoken Language Processing ICSLP2000, Beijing, China.

Johnstone, T. & Scherer, K. R. (1999). The effects of emotions on voice quality. Proceedings of the XIVth International Congress of Phonetic Sciences.

Karlsson I, Banziger T, Dankovicová J, Johnstone T, Lindberg J, Melin H, Nolan F & Scherer K. (1998). Within-speaker variability due to speaking manners. Proceedings of ICSLP98, International Conference on Spoken Language Processing, Sydney, Australia.

Scherer, K. R., Johnstone, T., & Bänziger, T. (1998). Automatic verification of emotionally stressed speakers: The problem of individual differences. Proceedings of the International Workshop on Speech and Computer, St. Petersburg.

Scherer, K. R., Johnstone, T., & Sangsue, J. (1998). L'état émotionnel du locuteur: facteur négligé mais non négligeable pour la technologie de la parole. Actes des XXIIèmes Journées d'Etudes sur la Parole, Martigny.

Karlsson I, Banziger T, Dankovicová J, Johnstone T, Lindberg J, Melin H, Nolan F & Scherer K (1998). Within speaker variation due to induced stress. In: Branderud P & Traunmüller H (eds). Proc of Fonetik -98, The Swedish Phonetics Conference, Stockholm University, May 27-29, 1998; 150-153.

I. Karlsson, I., Bänziger, T., Dankovicová, J., Johnstone, T., Lindberg, J., Melin, H., Nolan, F., & Scherer, K.R. (1998). Speaker verification with elicited speaking-styles in the Verivox project. Proceedings of IEEE/ESCA Workshop on Speaker Recognition and its Commercial and Forensic Applications, Avignon.

van Reekum, C. M., Johnstone, T., & Scherer, K. R. (1997). Multimodal measurement of emotion induced by the manipulation of appraisals in a computer game. Presented at the 3rd European Congress of Psychophysiology, Konstanz.

Johnstone, I. T. (1996). Emotional speech elicited using computer games.Proceedings of the 4th International Conference on Spoken Language Processing, 3, 1985-1988.

Johnstone, I. T. and Scherer, K. R. (1995). Spectral Measurement of Voice Quality in Opera Singers: The Case of Gruberova.Proceedings of the XIIIth International Congress of Phonetic Sciences, 1, 218-221.

Johnstone, I. T., Banse, R. and Scherer, K. R. (1995). Acoustic Profiles from Prototypical Vocal Expressions of Emotion. Proceedings of the XIIIth International Congress of Phonetic Sciences, 4, 2-5.