PMID- 8670684
OWN - NLM
STAT- MEDLINE
DCOM- 19961024
LR  - 20190512
IS  - 1047-3211 (Print)
IS  - 1047-3211 (Linking)
VI  - 6
IP  - 4
DP  - 1996 Jul-Aug
TI  - Areas PMLS and 21a of cat visual cortex: two functionally distinct areas.
PG  - 585-99
AB  - We have compared the receptive field properties of neurons recorded from 
      visuotopically corresponding regions of area 21a and the posteromedial lateral 
      suprasylvian area (PMLS) of cat visual cortex. In both areas, the great majority 
      of neurons were orientation-selective and binocular, and their responses to 
      moving contours were modulated by simultaneous in-phase or anti-phase motion of 
      large textured background stimuli ('visual noise'). However, despite the great 
      hodological similarity between the two areas, PMLS neurons had on average 
      significantly higher peak discharge rates, exhibited substantially greater 
      direction selectivity indices, and preferred substantially higher stimulus 
      velocities than area 21a neurons. Furthermore, the majority of binocular neurons 
      in the PMLS area and in area 21a were dominated respectively by contralateral and 
      ipsilateral eyes. Finally, while 46% of PMLS neurons were excited by movement of 
      visual noise per se, only 25% of area 21a neurons could be excited by such 
      stimuli. We argue that the PMLS area, like its presumed primate homologue the 
      middle-temporal (MT) area, is mainly involved in motion analysis. By contrast, 
      area 21a appears to be involved in pattern analysis rather than motion analysis. 
      It is likely that phylogenetically area 21a derives from the PMLS area.
FAU - Dreher, B
AU  - Dreher B
AD  - Department of Anatomy, Institute for Biomedical Research, University of Sydney, 
      NSW 2066, Australia.
FAU - Wang, C
AU  - Wang C
FAU - Turlejski, K J
AU  - Turlejski KJ
FAU - Djavadian, R L
AU  - Djavadian RL
FAU - Burke, W
AU  - Burke W
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Cereb Cortex
JT  - Cerebral cortex (New York, N.Y. : 1991)
JID - 9110718
SB  - IM
MH  - Animals
MH  - Cats
MH  - Electrophysiology
MH  - Functional Laterality/physiology
MH  - Motion Perception/physiology
MH  - Neurons/physiology
MH  - Orientation/physiology
MH  - Visual Cortex/*anatomy & histology/cytology/*physiology
MH  - Visual Fields/physiology
EDAT- 1996/07/01 00:00
MHDA- 1996/07/01 00:01
CRDT- 1996/07/01 00:00
PHST- 1996/07/01 00:00 [pubmed]
PHST- 1996/07/01 00:01 [medline]
PHST- 1996/07/01 00:00 [entrez]
AID - 10.1093/cercor/6.4.585 [doi]
PST - ppublish
SO  - Cereb Cortex. 1996 Jul-Aug;6(4):585-99. doi: 10.1093/cercor/6.4.585.