Christian Gerlach; I. Law; Anders Gade; O. B. Paulson. Perceptual differentiation and category effects in normal object
recognition: a PET study.
Brain 122 ( Pt 11):2159-70, 1999.
The purpose of the present PET study was (i) to investigate the neural correlates of object recognition, i.e. the matching of visual forms to memory, and (ii) to test the hypothesis that this process is more difficult for natural objects than for artefacts. This was done by using object decision tasks where subjects decided whether pictures represented real objects or non-objects. The object decision tasks differed in their difficulty (the degree of perceptual differentiation needed to perform them) and in the category of the real objects used (natural objects versus artefacts). A clear effect of task difficulty was found in both the behavioural and in the PET data. In the PET data, the increase in task difficulty was associated with increased regional cerebral blood flow in the posterior part of the right inferior temporal gyrus and in the anterior part of the right fusiform gyrus. This may be the neural correlate of matching visual forms to memory, and the amount of activation in these regions may correspond to the degree of perceptual differentiation required for recognition to occur. With respect to behaviour, it took significantly longer to make object decisions on natural objects than on artefacts in the difficult object decision tasks. Natural objects also recruited larger parts of the right inferior temporal and anterior fusiform gyri compared with artefacts as task difficulty increased. Differences in the amount of activation in these regions may reflect the greater perceptual differentiation required for recognizing natural objects. These findings are discussed in relation to category-specific impairments after neural damage.Asymmetry: 0.00000 (left: -1, right: +1)
VRML2 file (103 Kb)
+1: 1.00000 Christian Gerlach; I. Law; Anders Gade; O. B. Paulson. Perceptual differentiation and category effects in normal object recognition: a PET study. Brain 122 ( Pt 11):2159-70, 1999. PMID: 10545400. WOBIB: 29.
+2: 0.63608 U. Hasson; T. Hendler; D. Ben Bashat; R. Malach. Vase or face? A neural correlate of shape-selective grouping processes in the human brain. Journal of Cognitive Neuroscience 13(6):744-53, 2001. PMID: 11564319. DOI: 10.1162/08989290152541412. FMRIDCID: 2-2001-111P8. WOBIB: 36.
+3: 0.61698 Christian Gerlach; C. T. Aaside; G. W. Humphreys; Anders Gade; O. B. Paulson; I. Law. Brain activity related to integrative processes in visual object recognition: bottom-up integration and the modulatory influence of stored knowledge. Neuropsychologia 40(8):1254-67, 2002. PMID: 11931928. WOBIB: 7.
+4: 0.58828 A. Ishai; L. G. Ungerleider; A. Martin; J. V. Haxby. The representation of objects in the human occipital and temporal cortex. Journal of Cognitive Neuroscience 12 Suppl 2:35-51, 2000. PMID: 11506646. DOI: 10.1162/089892900564055. FMRIDCID: 2-2000-1113D. WOBIB: 28.
+5: 0.58504 Andreas Bartels; Semir Zeki. Functional brain mapping during free viewing of natural scenes. Human Brain Mapping 21(2):75-85, 2004. PMID: 14755595. DOI: 10.1002/hbm.10153. WOBIB: 123.
+6: 0.57286 Andrea Mechelli; Karl J. Friston; Cathy J. Price. The effects of presentation rate during word and pseudoword reading: a comparison of PET and fMRI. Journal of Cognitive Neuroscience 12 Suppl 2():145-156, 2000. PMID: 11506654. DOI: 10.1162/089892900564000. FMRIDCID: 2-2000-11189. WOBIB: 129.
+7: 0.54043 N. George; J. Driver; R. J. Dolan. Seen gaze-direction modulates fusiform activity and its coupling with other brain areas during face processing. NeuroImage 13(6 Pt 1):1102-12, 2001. PMID: 11352615. DOI: 10.1006/nimg.2001.0769. WOBIB: 18.
+8: 0.53117 I Levy; U Hasson; G Avidan; T Hendler; R Malach. Center-periphery organization of human object areas. Nature Neuroscience 4(5):533-9, 2001. PMID: 11319563. DOI: 10.1038/87490. WOBIB: 5.
+9: 0.45628 Nouchine Hadjikhani; Beatrice de Gelder. Seeing fearful body expressions activates the fusiform cortex and amygdala. Current Biology 13(24):2201-2205, 2003. PMID: 14680638. DOI: 10.1016/j.cub.2003.11.049. FMRIDCID: . WOBIB: 153.
+10: 0.41940 S. Aalto; P. Naatanen; E. Wallius; L. Metsahonkala; H. Stenman; P. M. Niem; H. Karlsson. Neuroanatomical substrata of amusement and sadness: a PET activation study using film stimuli. NeuroReport 13(1):67-73, 2002. PMID: 11924897. WOBIB: 88.
+11: 0.41508 Gene E. Alexander; Kewei Chen; Pietro Pietrini; Stanley I. Rapoport; Eric M. Reiman. Longitudinal PET Evaluation of Cerebral Metabolic Decline in Dementia: A Potential Outcome Measure in Alzheimer's Disease Treatment Studies. American Journal of Psychiatry 159(5):738-45, 2002. PMID: 11986126. WOBIB: 91.
+12: 0.40379 N. J. Shah; J. C. Marshall; O. Zafiris; A. Schwab; Karl Zilles; H. J. Markowitsch; G. R. Fink. The neural correlates of person familiarity. A functional magnetic resonance imaging study with clinical implications. Brain 124(Pt 4):804-15, 2001. PMID: 11287379. WOBIB: 64.
+13: 0.39350 A. T. Smith; M. W. Greenlee; K. D. Singh; F. M. Kraemer; J. Hennig. The processing of first- and second-order motion in human visual cortex assessed by functional magnetic resonance imaging (fMRI). Journal of Neuroscience 18(10):3816-30, 1998. PMID: 9570811. WOBIB: 53.
+14: 0.39341 G. R. Fink; H. J. Markowitsch; M. Reinkemeier; T. Bruckbauer; J. Kessler; W. D. Heiss. Cerebral representation of one's own past: neural networks involved in autobiographical memory. Journal of Neuroscience 16(13):4275-82, 1996. PMID: 8753888. WOBIB: 68.
+15: 0.38247 Gemma A. Calvert; Michael J. Brammer; Edward T. Bullmore; Ruth Campbell; S. D. Iversen; Anthony S. David. Response amplification in sensory-specific cortices during crossmodal binding. NeuroReport 10(12):2619-2623, 1999. PMID: 10574380. FMRIDCID: . WOBIB: 164.
+16: 0.37460 Guido K. Frank; Walter H. Kaye; Carolyn C. Meltzer; Julie C. Price; Phil Greer; Claire McConaha; Kelli Skovira. Reduced 5-HT2A receptor binding after recovery from anorexia nervosa. Biological Psychiatry 52(9):896-906, 2002. PMID: 12399143. FMRIDCID: . WOBIB: 131.
+17: 0.37430 Semir Zeki; R. J. Perry; A. Bartels. The processing of kinetic contours in the brain. Cerebral Cortex 13(2):189-202, 2003. PMID: 12507950. WOBIB: 52.
+18: 0.37355 Christian Büchel; Oliver Josephs; Geraint Rees; R. Turner; C. D. Frith; Karl J. Friston. The functional anatomy of attention to visual motion. A functional MRI study. Brain 121 ( Pt 7):1281-94, 1998. PMID: 9679780. WOBIB: 24.
+19: 0.35234 Troels W. Kjaer; Ian Law; Gordon Wiltschiotz; Olaf B. Paulson; Peter L. Madsen. Regional cerebral blood flow during light sleep--a H(2)(15)O-PET study. Journal of Sleep Research 11(3):201-207, 2002. PMID: 12220315. WOBIB: 124.
+20: 0.34970 Christian Gerlach; I. Law; Anders Gade; O. B. Paulson. Categorization and category effects in normal object recognition: a PET study. Neuropsychologia 38(13):1693-703, 2000. PMID: 11099727. WOBIB: 2.
+21: 0.34747 J. M. Ellermann; J. D. Siegal; J. P. Strupp; T. J. Ebner; K. Ugurbil. Activation of visuomotor systems during visually guided movements: a functional MRI study. Journal of Magnetic Resonance 131(2):272-285, 1998. PMID: 9571103. WOBIB: 45.
+22: 0.33366 M. Tillfors; T. Furmark; I. Marteinsdottir; Hċkan Fischer; A. Pissiota; B. Langstrom; M. Fredrikson. Cerebral blood flow in subjects with social phobia during stressful speaking tasks: a PET study. American Journal of Psychiatry 158(8):1220-6, 2001. PMID: 11481154. WOBIB: 77.
+23: 0.32428 Russell A. Poldrack; John E. Desmond; Gary H. Glover; John D. E. Gabrieli. The neural basis of visual skill learning: an fMRI study of mirror reading. Cerebral Cortex 8(1):1-10, 1998. PMID: 9510380. WOBIB: 15.
+24: 0.31215 L. K. Tyler; E. A. Stamatakis; P. Bright; K. Acres; S. Abdallah; J. M. Rodd; H. E. Moss. Processing objects at different levels of specificity. Journal of Cognitive Neuroscience 16(3):351-362, 2004. PMID: 15072671. DOI: 10.1162/089892904322926692. FMRIDCID: . WOBIB: 145.
B. A. Strange; L. J. Otten; Oliver Josephs; Michael D. Rugg; Raymond J. Dolan. Dissociable human perirhinal, hippocampal, and parahippocampal roles during verbal encoding.
Journal of Neuroscience 22(2):523-528, 2002.
-1: 0.00000 J. D. Bremner; R. B. Innis; S. M. Southwick; L. Staib; S. Zoghbi; D. S. Charney. Decreased benzodiazepine receptor binding in prefrontal cortex in combat-related posttraumatic stress disorder. American Journal of Psychiatry 157(7):1120-1126, 2000. PMID: 10873921. WOBIB: 67.
-2: 0.00001 Stefan Geyer; Anders Ledberg; Axel Schleicher; Shigeo Kinomura; Thorsten Schormann; Uli Burgel; Torkel Klingberg; Jonas Larsson; Karl Zilles; Per E. Roland. Two different areas within the primary motor cortex of man. Nature 382(6594):805-807, 1996. PMID: 8752272. FMRIDCID: . WOBIB: 163.
-3: 0.00006 I. Indovina; J. N. Sanes. On somatotopic representation centers for finger movements in human primary motor cortex and supplementary motor area. NeuroImage 13(6 Pt 1):1027-34, 2001. PMID: 11352608. DOI: 10.1006/nimg.2001.0776. WOBIB: 11.
-4: 0.00018 Andrew C. N. Chen; David M. Niddam; Helen J. Crawford; Robert Oostenveld; Lars Arendt-Nielsen. Spatial summation of pain processing in the human brain as assessed by cerebral event related potentials. Neuroscience Letters 328(2):190-194, 2002. PMID: 12133585. FMRIDCID: . WOBIB: 136.
Daniel D. Langleben; L. Schroeder; J. A. Maldjian; R. C. Gur; S. McDonald; J. D. Ragland; C. P. O'Brien; A. R. Childress. Brain Activity during Simulated Deception: An Event-Related Functional Magnetic Resonance Study.
NeuroImage 15(3):727-732, 2002.