The SpeechGraph software is a graph-theoretical analysis tool that uses text as input and graph features as output. SpeechGraph can run on many different platforms such as Linux, Windows and OSX.

Logo by G. M. Silva


We provide a User Guide as a PDF inside the software package, with a thorough explanation of all software functions. Alternatively, you can download it here.


You can download the latest version of the SpeechGraphs tool right here. The current software version is 1.0.39


We would like to receive your suggestions or bug reports. Please email to speechgraphs@neuro.ufrn.br.


The SpeechGraphs software was developed at the Brain Institute of the Federal University of Rio Grande do Norte (Natal, Brazil), by R. Furtado, P.P.C., Maia, N.B. Mota, S. Ribeiro, M. Copelli and D.F. Slezak.

If you use SpeechGraphs, please cite:

1) Mota, N.B., Furtado, R., Maia, P.P.C., Copelli, M. & Ribeiro, S. Graph analysis of dream reports is especially informative about psychosis. Sci. Rep. 4, 3691; DOI:10.1038/srep03691 (2014)

2) Mota NB, et al. (2012) Speech Graphs Provide a Quantitative Measure of Thought Disorder in Psychosis. PLoS ONE 7(4): e34928. doi: 10.1371/journal.pone.0034928

This software is distributed as is and without warranty of any kind. In no event shall the authors or copyright holders be liable for any claim, damages or other liability arising from the use of the software.