Location of Repository

Visual categorization and the parietal cortex

By Jamie K. Fitzgerald, Sruthi K. Swaminathan and David J. Freedman


The primate brain is adept at rapidly grouping items and events into functional classes, or categories, in order to recognize the significance of stimuli and guide behavior. Higher cognitive functions have traditionally been considered the domain of frontal areas. However, increasing evidence suggests that parietal cortex is also involved in categorical and associative processes. Previous work showed that the parietal cortex is highly involved in spatial processing, attention, and saccadic eye movement planning, and more recent studies have found decision-making signals in lateral intraparietal area (LIP). We recently found that a subdivision of parietal cortex, LIP, reflects learned categories for multiple types of visual stimuli. Additionally, a comparison of categorization signals in parietal and frontal areas found stronger and earlier categorization signals in parietal cortex arguing that, in trained animals, parietal abstract association or category signals are unlikely to arise via feedback from prefrontal cortex (PFC)

Topics: Neuroscience
Publisher: Frontiers Media S.A.
OAI identifier: oai:pubmedcentral.nih.gov:3348721
Provided by: PubMed Central
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://www.pubmedcentral.nih.g... (external link)
  • Suggested articles



    1. (2003). A comparison of primate prefrontal and inferior temporal cortices during visual categorization.
    2. (2002). A n d e r s e n ,R .A . ,a n dB u n e o
    3. (2012). accepted: 23
    4. (2001). Categorical representation of visual stimuli in the primate prefrontal cortex.
    5. (2010). Category learning in the brain.
    6. (2008). Coding of shape and position in macaque lateral intraparietal area.
    7. (2000). Corticocortical connections of visual, sensorimotor, and multimodal processing areas in the parietal lobe of the macaque monkey.
    8. (2003). Delay-period activities in two subdivisions of monkey inferotemporal cortex during pair association memory task.
    9. (2011). Differences between neural activity in prefrontal cortex and striatum during learning of novel, abstract categories.
    10. (2009). Direction selectivity of neurons in the macaque lateral intraparietal area.
    11. (2009). Distinct encoding of spatial and nonspatial visual information in parietal cortex.
    12. (2011). Distinct representations of a perceptual decision and the associated oculomotor plan in the monkey lateral intraparietal area.
    13. (2002). doi: 10.3389/fnsys.2011.00069 M i l l e r ,E .K . ,F r e e d m a n ,D .J . ,a n d
    14. (2002). Dynamic coding of behaviourally relevant stimuli in parietal cortex.
    15. (2012). Executive control over cognition: stronger and earlier rule-based modulation of spatial category signals in prefrontal cortex relative to parietal cortex.
    16. (2006). Experience-dependent representation of visual categories in parietal cortex.
    17. (2011). F i t z g e r a l d ,J .K . ,F r e e d m a n ,D .J . ,a n d Assad,
    18. (2009). Frontal eye field neurons signal changes in decision criteria.
    19. J.A.(2011). A proposed common neural mechanism for categorization and perceptual decisions.
    20. (1991). Neural organization for the longterm memory of paired associates.
    21. (2008). Neurobiology of decision making: an intentional framework,”
    22. (1983). Object vision and spatial vision: two cortical pathways.
    23. (1975). Posterior parietal association cortex of the monkey: command functions for operations within extrapersonal space.
    24. (2012). Preferential encoding of visual categories in parietal cortex compared with prefrontal cortex.
    25. (2010). Prefrontal cortex activity during flexible categorization.
    26. (1999). Prospective coding for objects in primate prefrontal cortex.
    27. (2007). Remembering visual motion: neural correlates of associative plasticity and motion recall in cortical area MT.
    28. (2010). Representation of multiple, independent categories in the primate prefrontal cortex.
    29. (2006). Saccades, salience and attention: the role of the lateral intraparietal area in visualbehavior.
    30. (1998). Shape selectivity in primate lateral intraparietal cortex.
    31. (2004). Single neurons in posterior parietal cortex of monkeys encode cognitive set.
    32. (2003). Single neurons in the monkey hippocampus and learning of new associations.
    33. (2005). Structure and function of visual area
    34. (2007). The neural basis of decision making.
    35. (2011). Top-down spatial categorization signal from prefrontal to posterior parietal cortex in the primate.
    36. (1990). Visual receptive field organization and corticocortical connections of the lateral intraparietal area (area LIP) in the macaque.
    37. (2012). Visualcategorization and the parietalcortex.
    38. W i r t h ,S . ,Y a n i k e ,M . ,F r a n k ,L .
    39. (2006). Walk the line: parietal neurons respect category boundaries.
    40. (2004). Y a n i k e ,M . ,W i r t h ,S . ,a n dS u z u k i

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.