B.S. Psychology. Kaohsiung Medical University, Taiwan, 1993
MSc. Behavioral Sciences, Kaohsiung Medical University, Taiwan, 1995
DPhil. Experimental Psychology, Oxford University, UK, 2002
Experimental Psychology, Oxford University
Prof. Vincent Walsh, ICN, UCL
Prof. Alan Cowey, Oxford
| Previous Positions Held : |
March 2002 – August 2003
Postdoctoral Research Associate to Professor Jeffrey Schall, Department of Psychology, Vanderbilt University, TN, USA
Prof. Jeff Schall, Vanderbilt University
October 1998 - March 2002
Research Assistant to Professor Vincent Walsh (Part-time), Department of Experimental Psychology, University of Oxford, UK.
Experimental Psychology, Oxford University
Visual Attention and Oculomotor systems
The application of Transcranial Magnetic Stimulation in Cognitive Neuroscience
Chinese Word Recognition
Number Comprehension and processing
Neuropsychological function of Parkinson’s disease, Alzheimer’s disease and stroke patients
Juan's research aims to elucidate the neural mechanisms of orienting attention and control of saccadic eye movements in visual cognition. Juan’s laboratory has various modern equipment such as Eye Link II eye-tracker, MagstimTM Transcranial Magnetic Stimulation machines and BriansightTM frameless stereotaxy system. Lab members currently use the equipment to investigate various visual cognitive issues such as: attentional blink, visual search and eye movements, control of inhibitory behavior.
Introduction to Cognitive Neuroscience
Neural Mechanisms of Visual attention
2009 Fulbright Scholar, Fulbright Scholar Program, USA
2008 National Central University Teaching Excellence Award
2006 National Central University Outstanding Research Award
2006 Academia Sinica Research Award for Junior Research Investigators
1999-2001 McDonnel-Pew Studentships, Centre for Cognitive Neuroscience, University of Oxford.
2000 650th Anniversary Trust Fund, The Queen’s College, University of Oxford
2000, 2001 Brain Travel Grant, Brain: a journal of Neurology, UK
2001 Human brain mapping travel awards, Organization for Human Brain Mapping Conference.
| Representative Publications: |
Chen, C-Y. Muggleton, NG. Tzeng, OJL. Hung, DL. .Juan, C-H. (2009) Control of prepotent responses by the superior medial frontal cortex. Neuroimage,15;44(2):537-45. (SCI, Corresponding Author)  Kalla R, Muggleton NG, Juan CH, Cowey A, Walsh V.(2008) The timing of the involvement of the frontal eye fields and posterior parietal cortex in visual search. Neuroreport. 2008 Jul 2;19(10):1067-1071.(Supported by NSC-96-2413-H-008-001-MY3) Juan, C-H. Muggleton, N. Hung, D. Tzeng, O, Cowey, A and Walsh, V. (2008) Segregation of visual selection and saccades in human frontal eye fields. Cerebral Cortex. (SCI, Corresponding Author). (Supported by NSC-95-2413-H-008-001) Chen, C-Y. Muggleton, N.G. Juan, C-H. Tzeng, OJL. Hung, DL. (2008). Time pressure leads to inhibitory control deficits in impulsive violent offenders. Behavioral Brain Research. . 2008 Mar 5;187(2):483-8. Epub 2007 Oct 22. (SCI, Corresponding Author) (Supported by NSC-95-2413-H-008-001) Juan, C-H. Chen, C-Y and Lu, D-H. (2005).The application of Transcranial Magnetic Stimulation in Cognitive Neuroscience. Research in Applied Psychology, 28(4), 51-74(In Chinese). (Supported by NSC-94-2413-H-008-001; NSC-94-2752-H-010-004-PAE) Juan, C-H. Lu, D-H. Liu, J-R and Chen, C-Y. (2005). A brief review on visual selective attention. Research in Applied Psychology, 28(4), 25-50 (In Chinese). (Supported by NSC-94-2413-H-008-001; NSC-94-2752-H-010-003-PAE) Chen, C-Y. Tien, Y-M. Juan, C-H. Tzeng, OJL. Hung, DL. (2005). The neural correlates of impulsive-violent behavior: An ERP study. NeuroReport, 16(11): 1213-6. (SCI) Corthout, E. Uttl, B. Juan, C-H. Hallett, M. and Cowey, A (2000). Suppression of vision by transcranial magnetic stimulation: a third mechanism. NeuroReport 11 (11), 2345-2349. (SCI) Muggleton, N.G. Juan, C-H. Cowey, A. & Walsh, V (2003) Human frontal eye fields and visual search. Journal of Neurophysiology, 89: 3340-3343. (SCI) Juan, C-H. and Walsh, V. (2003). Feedback to V1: A Reverse Hierarchy in Vision Experimental Brain Research, 150, 259-263. (SCI) Juan, C-H. Campana, G. and Walsh, V. (2004). Cortical interactions in vision and awareness: hierarchies in reverse. Progress in Brain Research, 144: 117-130(SCI) Schall, JD. Sato TR. Thompson, KG. Vaughn, A. Juan, C-H (2004). Effects of search efficiency on surround suppression during visual selection in Frontal Eye Field. Journal of Neurophysiology. 91(6): 2765-2769. (SCI) Juan, C-H. Shorter-Jacobi, S.M. and Schall, JD (2004). Dissociation of Spatial attention and saccade preparation. Proceedings of the National Academy of Sciences ,USA, 101 (43), 15541-15544. (SCI)
Chen, C. Y., Juan, C.H., Tzeng O. J-L & Hung, D. L (2008) Impulsive and instrumental violent offenders display different attentional disengagement from negative facial expressions: an event-related potential study. Division of forensic psychology conference. Edinburgh UK. June-2008 (Supported by NSC-96-2413-H-008-001-MY3; NSC-96-2752-H-010-003-PAE). Juan, CH., Chang, CF., Hung, DL., Tzeng, OJL., (2007) Exploring the functional and the temporal involvement of the temporoparietal junction in stimulus-driven attention with TMS. Society for Neuroscience, San Diego USA, November. (Supported by NSC-95-2752-H-010-003-PAE & NSC-96-2413-H-008-001) Hsu, WY., Liu, JR., Hung, DL., Tzeng, OJL., Juan, CH (2007) Dissociating visual selection and saccade programming in time Cognitive Neuroscience Society Annual Meeting, New York, USA, May. (Supported by NSC-95-2413-H-008-001) Chang, CF., Shiao HY., Lin, YC., Hung, DL., Tzeng, OJL., Juan, CH (2007) Probing the functional roles of the frontal eye fields and the temporoparietal junction in the interplay between voluntary and stimulus-driven attention with TMS. Cognitive Neuroscience Society Annual Meeting, New York, USA, May. (Supported by NSC-95-2413-H-008-001) Hsu, TY., Chyan, JL., Cheng, SK., Hung, DL., Tzeng, OJL., Juan, CH (2007) The number distance effect is enhanced in the attentional blink period. Cognitive Neuroscience Society Annual Meeting, New York, USA, May. (Supported by NSC-95-2413-H-008-001) Chen, CY., Juan, CH., Muggleton, N.G., Tzeng, OJL., Hung, DL. (2007) Impulsive- and premeditated- violent offenders display different patterns of attentional disengagement from negative facial expressions. Cognitive Neuroscience Society Annual Meeting, New York, USA, May. (Supported by NSC-94-2752-H-010-003-PAE & NSC-95-2413-H-008-001) 陳巧雲;阮啟弘;曾志朗;洪蘭 (2006). Impulsive and premeditated violent offenders display different patterns of the disengagement costs in negative facial expressions.The 45th Annual Meeting of Taiwan Psychology Society, Taipei, Taiwan. September. (Supported by NSC-95-2413-H-008-001). 徐慈妤;阮啟弘;洪蘭; 曾志朗 (2006). 利用注意力暫失現象探討數字訊息的處理歷程.The 45th Annual Meeting of Taiwan Psychology Society, Taipei, Taiwan. September. (Supported by NSC-95-2413-H-008-001). Lu, D-H. Hung, D. Tzeng, O and Juan, C-H. (2006) The functional role of the frontal eye field in temporal allocation of visual attention explored with Transcranial Magnetic Stimulation, Human Brain Mapping Annual Meeting, Florence, Italy, June. (Supported by NSC-94-2413-H-008-001). Chen, CY., Juan CH., Tzeng, OJL., Hung, DL. (2006) Attentional biases for angry facial expressions in impulsive-violent offenders. Cognitive Neuroscience Society Annual Meeting, San Francisco, USA, April. (Supported by NSC-94-2413-H-008-001). Juan, C-H, Lu, D-H. Hung, D. and Tzeng, O (2005) Magnetophysiological correlates of feature and conjunction visual search tasks: A preliminary MEG study. The international conference of cognitive neuroscience, Taiwan. (Supported by NSC-94-2413-H-008-001). Hsiao, H-Y. Juan, C-H. (2005) Attentional capture by abrupt onsets measured with anti/pro manual reaction time task. The 44th Annual Meeting of Taiwan Psychology Society, Jhongli, Taiwan. (Supported by NSC-94-2413-H-008-001). Liu, J-R. Cheng, H-Y. Juan, C-H. (2005) What does the saccade curvature represent: attentional allocation or saccade programming? The 44th Annual Meeting of Taiwan Psychology Society, Jhongli, Taiwan. (Supported by NSC-94-2413-H-008-001). Lu, D-H. Hung, D. Tzeng, O and Juan, C-H. (2005) The functional role of frontal eye field in the temporal allocation of visual attention. The 44th Annual Meeting of Taiwan Psychology Society, Jhongli, Taiwan. (Supported by NSC-94-2413-H-008-001). Chen C-Y, Juan, C-H. Tzeng, O. & Hung, D. (2005) Attentional biases for angry faces: Relationships to impulsive-violent offenders. The 44th Annual Meeting of Taiwan Psychology Society, Jhongli, Taiwan. (Supported by NSC-94-2413-H-008-001). Juan, C-H. (2005) On the distinction between visual selection and saccade preparation in the Frontal Eye Fields of monkeys. European Brain and Behaviour Soceity, Dublin, Ireland, September. (Invited Symposium talk; Supported by NSC-94-2413-H-008-001) Chen, C-Y. Juan, C-H. Tzeng, O. & Hung, D (2005) Using the countermanding paradigm to examine the inhibitory control of response selection in impulsive-violent offenders. Cognitive Neuroscience Society Annual Meeting, New York, USA, March. Muggleton, N.G. Juan, C-H. Cowey, A. & Walsh, V (2005) Human frontal eye field involvement in responding to changing task requirements Cognitive Neuroscience Society Annual Meeting, New York, USA, March. (Supported by NSC-93-2413-H-008-003) Juan, C-H. Muggleton, N.G. Shorter-Jacobi, S. M. Schall, J. D. Walsh, V. and Tzeng, O. J. L. (2005). On the distinction of visual selection from saccade preparation in the frontal eye fields. The 9th Workshop on Attention and Perception. .Chia-Yi, Taiwan. Chen, C-Y. Juan, C-H. Tzeng, O. & Hung, D (2005) Using the countermanding paradigm to examine the inhibitory control of response selection in impulsive-violent offenders. International Conference on Attentional Control, Chia-Yi, Taiwan, January. Lu, D-H. Hung, D-L. Tzeng, O. and Juan, C-H. (2005).The effects of masking on binding errors in attentional blink. International Conference on Attentional Control, Chia-Yi, Taiwan, January. (Supported by NSC-93-2413-H-008-003) Muggleton, N.G. Juan, C-H. Cowey, A. & Walsh, V (2004) Dissociation of visual processing and saccade generation in human frontal eye fields. Society for Neuroscience, San Diego USA, November. (Supported by NSC-93-2413-H-008-003) Juan, C-H. Muggleton, N.G. Cowey, A. Walsh, V. Hung, D. and Tzeng, O (2004) Visual selection without eye movements in human visual cortices: two Transcranial Magnetic Stimulation studies. The 3rd International Symposium on Cognitive Neuroscience, Hong Kong. Shorter-Jacobi, S.M. Juan, C-H. & Schall, J.D (2003) Microstimulation of frontal eye field during visual search with variable stimulus-response mapping: 2. Dynamics of compensation Society for Neuroscience abstract, New Orleans, USA, November. Juan, C-H. Shorter-Jacobi, S.M. & Schall, J.D (2003) Microstimulation of frontal eye field during visual search with variable stimulus-response mapping: 1. Dissociation of visual and saccade selection. Society for Neuroscience abstract, New Orleans, USA, November. Muggleton, N.G. Juan, C-H. Cowey, A. & Walsh, V (2003) The role of the human frontal eye fields in visual search. Cognitive Neuroscience Society Annual Meeting, New York, USA, March. Muggleton NG, O’Shea J, Juan C-H, Cowey A, Walsh V. (2003) The role and timing of human frontal eye field involvement in visual search. Proceedings of the 29th Göttingen Neurobiology Conference, 1207. Muggleton, N.G. Juan, C-H. Cowey, A. & Walsh, V (2002) Human frontal eye fields and visual search. Society for Neuroscience abstracts, 559.10, Orlando, USA, November. Juan, C-H. & Walsh, V. (2001). Exploring the role of the primary visual cortex in visual search: A TMS study. Society for Neuroscience abstracts, 416.5, San Diego, USA, November. Juan, C-H. M. Rushworth and Walsh, V. (2001). Exploring the role of posterior parietal cortex on enumeration by transcranial magnetic stimulation. Human Brain Mapping, Brighton, UK Juan, C-H. & Walsh, V. (2000). Dissociating attention in search and eye movements with transcranial magnetic stimulation. Society for Neuroscience Abstracts, 26, 2228, New Orleans, USA, November. Juan, C-H. Walsh, V. and McLeod, P. (2000). Preattentive vision and enumeration. IOVS 41 (4) S39, The Association for Research in Vision and Ophthalmology, Florida, USA, April. Juan, C-H. Walsh, V. and McLeod, P. (1999). Preattentive processing in a preattentive task. Perception 28 (supplement) 140, European Conference on Visual Perception, Trieste, Italy, August. Tai, C.T. and Juan, C-H. (1996) The effects of instructional cues on executive functions of parkinsonian patients. Bull. Taiwan Neurol. Soc. 21: 26.
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