Dr. José P. Ossandón

Education

2008-2016 Ph.D. in Cognitive Science. Universität Osnabrück. Overt selection and processing of visual stimuli. Under the supervision of Professor Peter König.

2005-2007 M.Sc. in Biomedical Sciences. Universidad de Chile. Top-down contribution to visual exploration behavior of natural images. Under the supervision of Professor Pedro E. Maldonado.

2002-2003 Medical Doctor. Universidad de Chile.

1997-2001 Bachelor in Medicine. Universidad de Chile.

Research Interests

• Mechanistics models of cortical-subcortical circuits of various brain systems.
• Active vision in ecological conditions: understanding how we decide from moment to moment where to look and how the resulting dynamical visual inputs are integrated for visual perception and general action.
• Multi-method research on humans with intensive single-subject recording of combined behavioural, electrophysiolgical, and neuroimaging data.

Publications

Ossandón, J.P., Rossion, B., Dormal, G., Kekunnaya, R., & Röder, B. (2025). Impaired rapid neural face categorization after reversing long-lasting congenital blindness. Cortex, 187, 124-139. https://doi.org/10.1016/j.cortex.2025.04.007

Pant, R., Pitchaimuthu, K., Ossandón, J. P., Shareef, I., Lingareddy, S., Finsterbusch, J., Kekunnaya, R., & Röder, B. (2025). Altered visual cortex excitatory/inhibitory ratio following transient congenital visual deprivation in humans. eLife, 13, RP98143. https://doi.org/10.7554/eLife.98143

Stange, L., Ossandón, J.P., & Röder, B. (2023). Crossmodal visual predictions elicit spatially specific early visual cortex activity but later than real visual stimuli. Philosophical Transactions of the Royal Society B, 378: 20220339. DOI: 10.1098/rstb.2022.0339.

Ossandón, J. P., Stange, L., Gudi-Mindermann, H., Rimmele, J. M., Sourav, S., Bottari, D., Kekunnaya, R., & Röder, B. (2023). The development of oscillatory and aperiodic resting state activity is linked to a sensitive period in humans. NeuroImage, 120171.

Pant, R., Ossandón, J.P., Stange, L., Shareef, I., Kekunnaya, R., & Röder, B. (2023). Stimulus-evoked and resting-state alpha oscillations show a linked dependence on patterned visual experience for development. NeuroImage: Clinical, 38, 103375.

Zerr, P*, Ossandon, JP*, Shareef, I, Van der Stigchel, S, Kekunnaya, R, and Röder, B (in press). Successful visually guided eye movements following sight restoration after congenital cataracts. Journal of Vision. [*equal contribution]

Afsari Z, Ossandón JP, König P. The dynamic effect of reading direction habit on spatial asymmetry of image perception. Journal of Vision, 16(11):8 (2016). doi: 10.1167/16.11.8.

Fischer P, Ossandón JP *, Keyser J, Gulberti A, Wilming N, Hamel W, Koeppen J, Buhmann C, Westphal M, Gerloff C, Moll CKE, Engel AK, König P. STN-DBS Reduces Saccadic Hypometria but Not Visuospatial Bias in Parkinson's Disease Patients. Frontiers in Behavioral Neuroscience, 10, 85 (2016). doi: 10.3389/fnbeh.2016.00085.
(* shared first autorship)

Ossandón JP, König P, Heed, T. Irrelevant tactile stimulation biases visual exploration in external coordinates. Scientific Reports, 5, 10664 (2015). doi: 10.1038/srep10664

Ehinger B, König P, Ossandón JP. Predictions of visual content across eye movements and their modulation by inferred information. The Journal of Neuroscience, 35(19):7403-7413 (2015). doi:10.1523/JNEUROSCI.5114-14.2015

Ossandón JP, Onat S, König P. Spatial biases in viewing behavior. Journal of Vision, 14(2):20, 1-26 (2014). doi:10.1167/14.2.20

Ossandón JP, Onat S, Cazzoli D, Nyffeler T, Müri R, König P. Unmasking the contribution of low-level features to the guidance of attention. Neuropsychologia, 50:3478-3487 (2012). doi:10.1016/j.neuropsychologia.2012.09.043

Plöchl M, Ossandón JP, König P. Combining EEG and eye tracking: identification, characterisation, and correction of eye movement artifacts in electroencephalographic data. Frontiers in Human Neuroscience, 6:278 (2012). doi:10.3389/fnhum.2012.00278

Ossandón JP, Helo A, Montefusco-Siegmund RA, Maldonado PE. Superposition model predicts EEG occipital activity during free viewing of natural scenes. The Journal of Neuroscience, 30(13):4787-4795 (2010). doi:10.1523/JNEUROSCI.5769-09.2010

Maldonado PE, Ossandón JP. Los tiempos del cerebro: Nuevas aproximaciones en la neurofisiología. In A. Ibañez, & D. Cosmelli, (eds), Nuevos Enfoques de la Cognición: Redescubriendo la dinámica de la acción, la intención y la intersubjetividad. (2007) Chile: Universidad Diego Portales. (In spanish)

Maldonado PE, Ossandón JP, Flores FJ. Attention and neurodynamical correlates of natural vision. En: Dynamical approaches to attentional mechanisms: Neurobiological, clinical and methodological trends. (Cosmelli D, Aboitiz F, Eds.). (2008) Research Signpost Books.