Research Topics
| Joo Hyun SongSummaryAffiliation: Smith-Kettlewell Eye Research Institute Country: USA Publications
| Collaborators |
Detail Information
Publications
Motion tracking modulates capacity allocation of visual working memoryJoo Hyun Song
Harvard University, Cambridge, Massachusetts, USA
Psychon Bull Rev 13:1011-5. 2006..We suggest that coherent motion between two temporally disparate arrays connects the arrays into a single visual event. VWM is then biased toward remembering the more recent state of the event...- Numeric comparison in a visually-guided manual reaching taskJoo Hyun Song
Department of Psychology, Harvard University, Cambridge, MA, USA
Cognition 106:994-1003. 2008..Direct evidence for an analogue representation of numbers was found in early as well as in later portions of hand trajectories, showing systematic shifts in position for small differences in numerical magnitude... 
Automatic adjustment of visuomotor readinessJoo Hyun Song
Department of Psychology, Harvard University, Cambridge, MA, USA
J Vis 7:2.1-9. 2007..We conclude that visuomotor readiness is automatically adjusted by the recent experience of trial difficulty...- Role of focal attention on latencies and trajectories of visually guided manual pointingJoo Hyun Song
Department of Psychology, Harvard University, Cambridge, MA, USA
J Vis 6:982-95. 2006..In addition, the presence of highly curved movement trajectories, directed first to a distractor then to the target reflects ongoing changes in focal attentional deployment and target selection... - Fixation offset facilitates saccades and manual reaching for single but not multiple target displaysJoo Hyun Song
Department of Psychology, Harvard University, 33 Kirkland Street, WJH 710, Cambridge, MA 02138, USA
Exp Brain Res 177:223-32. 2007..Our results suggest that the gap may facilitate attentional disengagement, but it does not help target selection in motor and perceptual discrimination tasks, where the allocation of attention to the target is required... - Target selection in visual search as revealed by movement trajectoriesJoo Hyun Song
Department of Psychology, Harvard University, 33 Kirkland Street, Cambridge, MA 02138, USA
Vision Res 48:853-61. 2008..In addition, our results show that the details of movement trajectories allow us to visualize the dynamics of target selection as they unfold in time... - Hidden cognitive states revealed in choice reaching tasksJoo Hyun Song
The Smith Kettlewell Eye Research Institute, San Francisco, CA 94115, USA
Trends Cogn Sci 13:360-6. 2009..Thus, this line of research provides new opportunities to integrate information across different disciplines such as perception, cognition and action, which have usually been studied in isolation... 
Eye-hand coordination during target selection in a pop-out visual searchJoo Hyun Song
The Smith Kettlewell Eye Research Institute, 2318 Fillmore St, San Francisco, CA 94115, USA
J Neurophysiol 102:2681-92. 2009..Overall, these results are consistent with flexible temporal coupling of saccade and reach initiation, but fairly tight coupling of target selection for the two types of action...- Target selection for visually guided reaching in macaqueJoo Hyun Song
Smith Kettlewell Eye Research Institute, 2318 Fillmore St, San Francisco, CA 94115, USA
J Neurophysiol 99:14-24. 2008..Overall, these results are consistent with reaching results in humans, indicating that the monkey provides a sound model for understanding the neural underpinnings of reach target selection... - High-capacity spatial contextual memoryYuhong Jiang
Department of Psychology, Harvard University, Cambridge, Massachusetts 02138, USA
Psychon Bull Rev 12:524-9. 2005..We conclude that the visual system has a high capacity for learning and retaining repeated spatial context, an ability that may compensate for our severe limitations in visual attention and working memory... - Roles of narrow- and broad-spiking dorsal premotor area neurons in reach target selection and movement productionJoo Hyun Song
The Smith Kettlewell Eye Research Inst, 2318 Fillmore St, San Francisco, CA 94115, USA
J Neurophysiol 103:2124-38. 2010..These results suggest that PMd contains signals related to target selection and movement execution and that different signals are carried by distinct neural subpopulations... - Hyperspecificity in visual implicit learning: learning of spatial layout is contingent on item identityYuhong Jiang
Department of Psychology, Harvard University, Cambridge, MA 02138, USA
J Exp Psychol Hum Percept Perform 31:1439-48. 2005..Similar results held when items changed shapes after training. The authors conclude that implicit visual learning is sensitive to trial context and that spatial context learning can be identity contingent... - Connecting the past with the present: how do humans match an incoming visual display with visual memory?Joo Hyun Song
Department of Psychology, Harvard University, Cambridge, MA, USA
J Vis 5:322-30. 2005..We suggest that the retrieval of a well-established visual memory can proceed even if an incoming display partly matches the previous memory... - Visual working memory for simple and complex features: an fMRI studyJoo Hyun Song
Department of Psychology, Harvard University, 33 Kirkland Street, WJH 820, Cambridge, MA 02138, USA
Neuroimage 30:963-72. 2006..The occipitotemporal regions were sensitive to featural differences, but not to VWM load manipulation. We propose that the response properties of these regions can jointly account for several findings in human VWM behavior... - Spatial context learning in visual search and change detectionYuhong Jiang
Department of Psychology, Harvard University, 33 Kirkland Street, WJH 820, Cambridge, MA 02138, USA
Percept Psychophys 67:1128-39. 2005..We suggest that although spatial context learning occurs in multiple tasks, the content of learning is, in part, task specific...