PMID- 8733752
OWN - NLM
STAT- MEDLINE
DCOM- 19961105
LR  - 20190718
IS  - 0959-4965 (Print)
IS  - 0959-4965 (Linking)
VI  - 7
IP  - 3
DP  - 1996 Feb 29
TI  - VEP in neglect patients have longer latencies for luminance but not for chromatic 
      patterns.
PG  - 815-9
AB  - In patients with unilateral neglect, visual evoked potentials (VEP) to stimuli 
      displayed in the left visual field are delayed compared with responses to right 
      visual field stimuli. In the present study, 10 patients with right brain damage 
      and neglect were tested with contrast-reversed sinusoidal gratings, modulated 
      either in luminance or in chromaticity. For gratings of luminance contrast 
      modulated over relatively high temporal frequencies (4-10.5 Hz), latencies of VEP 
      were about 30 ms longer for stimuli presented to the contralesional (left) visual 
      field than to the field ipsilateral to the lesion. For equiluminant stimuli 
      modulated at relatively low temporal frequencies (1-4 Hz), however, latency was 
      the same for both hemifields. As this condition activates predominately the 
      parvocellular pathway the results are consistent with our previous suggestion 
      that the delay observed with luminance stimuli in neglect patients results from 
      selective disruption of the faster response of the magnocellular pathway.
FAU - Spinelli, D
AU  - Spinelli D
AD  - Dipartimento di Psicologia, Universita di Roma La Sapienza, Pisa, Italy.
FAU - Angelelli, P
AU  - Angelelli P
FAU - De Luca, M
AU  - De Luca M
FAU - Burr, D C
AU  - Burr DC
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Neuroreport
JT  - Neuroreport
JID - 9100935
SB  - IM
MH  - Cognition Disorders/*physiopathology
MH  - Color
MH  - Evoked Potentials, Visual/*physiology
MH  - Female
MH  - Functional Laterality/physiology
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Pattern Recognition, Visual/*physiology
MH  - Photic Stimulation
MH  - Visual Fields/physiology
MH  - Visual Pathways/physiology
EDAT- 1996/02/29 00:00
MHDA- 1996/02/29 00:01
CRDT- 1996/02/29 00:00
PHST- 1996/02/29 00:00 [pubmed]
PHST- 1996/02/29 00:01 [medline]
PHST- 1996/02/29 00:00 [entrez]
AID - 10.1097/00001756-199602290-00032 [doi]
PST - ppublish
SO  - Neuroreport. 1996 Feb 29;7(3):815-9. doi: 10.1097/00001756-199602290-00032.