Research Topics
| Christopher SummerfieldSummaryAffiliation: Columbia University Country: USA Publications
| Collaborators |
Detail Information
Publications
Mistaking a house for a face: neural correlates of misperception in healthy humansChristopher Summerfield
Department of Psychology, Columbia University, 406 Schermerhorn Hall, 1190 Amsterdam Ave, New York, NY 10027, USA
Cereb Cortex 16:500-8. 2006..We suggest that FFA responses during misperception may be driven by a predictive top-down signal from these regions...
A neural representation of prior information during perceptual inferenceChristopher Summerfield
Institut National de la Sante et de la Recherche Medicale, Departement des Etudes Cognitives, Ecole Normale Superieure, 29, rue d Ulm, Paris 75005, France
Neuron 59:336-47. 2008..These data support computational and quantitative models proposing that a visual percept emerges from converging bottom-up and top-down signals...- Predictive codes for forthcoming perception in the frontal cortexChristopher Summerfield
Department of Psychology, Columbia University, 1190 Amsterdam Avenue, New York, NY 10027, USA
Science 314:1311-4. 2006.... 
Neocortical connectivity during episodic memory formationChristopher Summerfield
Department of Psychology, Columbia University, New York, New York, USA
PLoS Biol 4:e128. 2006..These data support the view that during episodic encoding, "top-down" control signals originating in the prefrontal cortex help determine which perceptual information is fated to be bound into the new episodic memory trace...- Two mechanisms for task switching in the prefrontal cortexAlexandre Hyafil
Institut National de la Sante et de la Recherche Medicale, University Pierre and Marie Curie Paris 6, Groupe Hospitalier Pitie Salpetriere, 75005 Paris, France
J Neurosci 29:5135-42. 2009..These data contribute to a literature arguing that human cognitive flexibility benefits from the setting of new priorities for future action as well as the overcoming of interference from previously active task sets... - Functional coupling between frontal and parietal lobes during recognition memoryChristopher Summerfield
Psychology Department, Schermerhorn Hall, Room 406, Columbia University, 1190 Amsterdam Ave, New York, NY 10027, USA
Neuroreport 16:117-22. 2005..Our results suggest that synchronization of neuronal responses in the gamma-band may be an important mechanism by which frontal and parietal regions exchange information during the recognition of past events... - The first does the work, but the third time's the charm: the effects of massed repetition on episodic encoding of multimodal face-name associationsJennifer A Mangels
City University of New York, New York, NY 10010, USA
J Cogn Neurosci 22:457-73. 2010..e., name)... - An information theoretical approach to prefrontal executive functionEtienne Koechlin
Institut National de la Sante et de la Recherche Medicale, Universite Pierre et Marie Curie, 9 Quai St Bernard, 75005 Paris, France
Trends Cogn Sci 11:229-35. 2007..The theory clarifies how executive control can operate as a unitary function, despite the requirement that information be integrated across multiple distinct, functionally specialized prefrontal regions... - Dissociable neural mechanisms for encoding predictable and unpredictable eventsChristopher Summerfield
Psychology Department, Columbia University, New York, NY 10027, USA
J Cogn Neurosci 18:1120-32. 2006..These results reveal for the first time the contribution of dissociable attentional mechanisms to successful encoding and contribute to a growing literature dedicated to understanding the role of neural synchrony in cognition... - Induced gamma activity is associated with conscious awareness of pattern masked nounsChristopher Summerfield
Department of Psychiatry and Psychobiology, University of Barcelona, Hospital Clinic, C Casanova 143, 08036, Barcelona, Spain
Int J Psychophysiol 44:93-100. 2002..It is concluded that gamma power is associated with awareness-dependent visual processing but not with processing that occurs in the absence of awareness... - Coherent theta-band EEG activity predicts item-context binding during encodingChristopher Summerfield
Psychology Department, Columbia University, New York, NY 10027, USA
Neuroimage 24:692-703. 2005..Theta-band coherence may be an important mechanism by which brain networks exchange information during learning... - Effects of subthalamic nucleus stimulation on characteristics of EMG activity underlying reaction time in Parkinson's diseaseHatice Kumru
Servei de Neurologia, , Departament de Medicina, Facultad de Medicina, Universitat de Barcelona, , Spain
Mov Disord 19:94-100. 2004..Such improvement is associated with a change in features of the EMG activity suggesting an increase in the excitability of the motor pathways engaged in ballistic movements... - Amygdalar and hippocampal MRI volumetric reductions in Parkinson's disease with dementiaCarme Junque
Department of Psychiatry and Clinical Psychobiology, University of Barcelona, Barcelona, Spain
Mov Disord 20:540-4. 2005..Nondemented PD patients also showed a degree of volumetric reduction in these structures although the differences were not statistically significant... - Dementia in Parkinson disease: a proton magnetic resonance spectroscopy studyChristopher Summerfield
Department of Psychiatry and Clinical Psychobiology, ICMSN, Hospital Clinic, Casanova 143, 08036 Barcelona, Spain
Arch Neurol 59:1415-20. 2002..The distribution of metabolite reduction differs from that reported in Alzheimer disease. These findings suggest that proton spectroscopy may serve as a metabolic marker of cognitive disturbance in patients with PD... - Structural brain changes in Parkinson disease with dementia: a voxel-based morphometry studyChristopher Summerfield
Department de Psiquiatria i Psicobiologia, Universitat de Barcelona, Spain
Arch Neurol 62:281-5. 2005..CONCLUSIONS: The hippocampus, thalamus, and anterior cingulate are the regions most affected in PDD. Our results agree with recent neuropathological findings suggesting the involvement of the limbic and cortical areas in PD...