Abstract:
:Behavioral measures of spatial summation in 4- and 11-week old human infants were obtained using the forced-choice preferential looking technique. Infants exhibit complete spatial summation over large areas (4 weeks: 8.9 degrees; 11 weeks: 5.5 degrees), much larger than those of adults tested in the same apparatus (2.6 degrees). Thus, infants' summation areas are larger than adults' by factors of 12 at 4 weeks and 4 at 11 weeks. It is argued that at most, one-half of this difference between the infant and adult data may be due to optical factors (e.g. defocus and small eye size). The remainder probably reflects differences in the neural organization of the immature and mature visual systems.
journal_name
Vision Resjournal_title
Vision researchauthors
Hamer RD,Schneck MEdoi
10.1016/0042-6989(84)90146-9subject
Has Abstractpub_date
1984-01-01 00:00:00pages
77-85issue
1eissn
0042-6989issn
1878-5646pii
0042-6989(84)90146-9journal_volume
24pub_type
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